diff --git a/src/page/AddMenu/components/AddMenuImgModal/index.tsx b/src/page/AddMenu/components/AddMenuImgModal/index.tsx
index 0de66a5d..463313b1 100644
--- a/src/page/AddMenu/components/AddMenuImgModal/index.tsx
+++ b/src/page/AddMenu/components/AddMenuImgModal/index.tsx
@@ -3,36 +3,40 @@ import { createPortal } from 'react-dom';
 import { ReactComponent as CancelIcon } from 'assets/svg/addmenu/mobile-cancle-icon.svg';
 import useAddMenuStore from 'store/addMenu';
 import ErrorMessage from 'page/Auth/Signup/component/ErrorMessage';
-import { ERRORMESSAGE } from 'page/ShopRegistration/constant/errorMessage'; import useImagesUpload from 'utils/hooks/useImagesUpload';
+import { ERRORMESSAGE } from 'page/ShopRegistration/constant/errorMessage';
+import { UploadError } from 'utils/hooks/useImagesUpload';
 import styles from './AddMenuImgModal.module.scss';
 
 interface AddMenuImgModalProps {
   isOpen: boolean;
   closeModal: (event?: React.MouseEvent | React.KeyboardEvent) => void;
+  imageObject: {
+    imageFile: string[];
+    imgRef: React.RefObject<HTMLInputElement>;
+    saveImgFile: () => Promise<void>;
+    uploadError: UploadError;
+    setImageFile: React.Dispatch<React.SetStateAction<string[]>>;
+  }
 }
 
-export default function AddMenuImgModal({ isOpen, closeModal }: AddMenuImgModalProps) {
+export default function AddMenuImgModal({ isOpen, closeModal, imageObject }: AddMenuImgModalProps) {
   const { setImageUrls } = useAddMenuStore();
 
-  const {
-    imageFile, imgRef, saveImgFile, uploadError,
-  } = useImagesUpload();
-
   const triggerFileInput = () => {
-    imgRef.current?.click();
+    imageObject.imgRef.current?.click();
   };
   const handleImageChange = async () => {
-    await saveImgFile();
+    await imageObject.saveImgFile();
   };
   const triggerCameraInput = () => {
-    imgRef.current?.click();
+    imageObject.imgRef.current?.click();
   };
   useEffect(() => {
-    if (imageFile && !uploadError) {
-      setImageUrls(imageFile);
+    if (imageObject.imageFile && !imageObject.uploadError) {
+      setImageUrls(imageObject.imageFile);
       closeModal();
     }
-  }, [imageFile, uploadError, setImageUrls, closeModal]);
+  }, [imageObject.imageFile, imageObject.uploadError, setImageUrls, closeModal]);
 
   if (!isOpen) return null;
 
@@ -45,12 +49,13 @@ export default function AddMenuImgModal({ isOpen, closeModal }: AddMenuImgModalP
         <span className={styles['content__main-text']}>이미지 추가</span>
         <span className={styles['content__sub-text']}>메뉴 사진을 추가할 수 있습니다.</span>
         <div className={styles['content__button-container']}>
-          <input type="file" accept="image/*" style={{ display: 'none' }} onChange={handleImageChange} ref={imgRef} multiple />
+          <input type="file" accept="image/*" style={{ display: 'none' }} onChange={handleImageChange} ref={imageObject.imgRef} multiple />
           <button type="button" className={styles['content__album-button']} onClick={triggerFileInput}>사진 앨범</button>
           <button type="button" className={styles['content__camera-button']} onClick={triggerCameraInput}>카메라 촬영</button>
         </div>
         <div className={styles['content__image-error-message']}>
-          {uploadError && <ErrorMessage message={ERRORMESSAGE[uploadError]} />}
+          {imageObject.uploadError
+            && <ErrorMessage message={ERRORMESSAGE[imageObject.uploadError]} />}
         </div>
       </div>
     </div>,
diff --git a/src/page/AddMenu/components/MenuImage/index.tsx b/src/page/AddMenu/components/MenuImage/index.tsx
index 19f4e36f..238e597e 100644
--- a/src/page/AddMenu/components/MenuImage/index.tsx
+++ b/src/page/AddMenu/components/MenuImage/index.tsx
@@ -24,17 +24,23 @@ export default function MenuImage({ isComplete }: MenuImageProps) {
   } = useBooleanState(false);
 
   const {
-    imageFile, imgRef, saveImgFile, uploadError,
+    imageFile, imgRef, saveImgFile, uploadError, setImageFile,
   } = useImagesUpload();
+  const imageObject = {
+    imageFile, imgRef, saveImgFile, uploadError, setImageFile,
+  }; // AddMenuImgModal에 넘길 props
   const handleAddImage = () => {
     imgRef.current?.click();
   };
   const handleDeleteImage = (image: string) => {
     removeImageUrl(image);
+    setImageFile(imageFile.filter((img) => img !== image)); // pc 버전 이미지 동기화
   };
+
   const handleImageChange = async () => {
     await saveImgFile();
   };
+
   useEffect(() => {
     if (imageFile) {
       setImageUrls(imageFile);
@@ -50,14 +56,14 @@ export default function MenuImage({ isComplete }: MenuImageProps) {
           </div>
           <div className={styles['mobile__new-image__container']}>
             {!isComplete && (
-            <button
-              type="button"
-              className={styles['mobile__new-image__add-btn']}
-              onClick={openAddMenuImgModal}
-            >
-              <ImgPlusIcon className={styles['mobile__new-image__plusIcon']} />
-              <div className={styles['mobile__new-image__add-caption']}>이미지 추가</div>
-            </button>
+              <button
+                type="button"
+                className={styles['mobile__new-image__add-btn']}
+                onClick={openAddMenuImgModal}
+              >
+                <ImgPlusIcon className={styles['mobile__new-image__plusIcon']} />
+                <div className={styles['mobile__new-image__add-caption']}>이미지 추가</div>
+              </button>
             )}
             {imageUrl.map((image, index) => (
               <div key={image} className={styles['mobile__new-image__item']}>
@@ -78,6 +84,7 @@ export default function MenuImage({ isComplete }: MenuImageProps) {
           <AddMenuImgModal
             isOpen={isAddMenuImgModal}
             closeModal={closeAddMenuImgModal}
+            imageObject={imageObject}
           />
         </div>
       ) : (
diff --git a/src/page/ManageEvent/AddingEvent/index.tsx b/src/page/ManageEvent/AddingEvent/index.tsx
index 16430599..c7b46b61 100644
--- a/src/page/ManageEvent/AddingEvent/index.tsx
+++ b/src/page/ManageEvent/AddingEvent/index.tsx
@@ -1,5 +1,4 @@
 import React, { useState } from 'react';
-import ReactQuill from 'react-quill';
 import 'react-quill/dist/quill.snow.css';
 import { useAddEvent } from 'query/event';
 import { useNavigate, useParams } from 'react-router-dom';
@@ -97,17 +96,25 @@ export const initialError = {
 export default function AddingEvent() {
   const [eventInfo, setEventInfo] = useState<EventInfo>(initialState);
   const [error, setError] = useState(initialError);
-  const [editor, setEditor] = useState('');
   const [isAlertModalOpen, setIsAlertModalOpen] = useState(false);
   const param = useParams();
 
   const { mutate: addEvent, isPending } = useAddEvent(param.id!);
   const navigate = useNavigate();
 
-  const changeInput = (e: React.ChangeEvent<HTMLInputElement>, type: 'title' | 'start' | 'end', change?: Change) => {
+  const changeInput = (
+    e: React.ChangeEvent<HTMLInputElement> | React.ChangeEvent<HTMLTextAreaElement>,
+    type: 'title' | 'start' | 'end' | 'content',
+    change?: Change,
+  ) => {
     const value = e.target.value.replaceAll(/[\D]/gi, '');
     if (type === 'title' && e.target.value.length <= 25) {
       setEventInfo({ ...eventInfo, title: e.target.value });
+      setError({ ...error, title: false });
+    }
+    if (type === 'content' && e.target.value.length <= 500) {
+      setEventInfo({ ...eventInfo, content: e.target.value });
+      setError({ ...error, content: false });
     }
     if (type === 'start') {
       if (change === 'year' && e.target.value.length <= 4) {
@@ -116,6 +123,7 @@ export default function AddingEvent() {
       if (change !== 'year' && e.target.value.length <= 2) {
         setEventInfo({ ...eventInfo, start_date: { ...eventInfo.start_date, [change!]: value } });
       }
+      setError({ ...error, date: false });
     }
     if (type === 'end') {
       if (change === 'year' && e.target.value.length <= 4) {
@@ -124,8 +132,8 @@ export default function AddingEvent() {
       if (change !== 'year' && e.target.value.length <= 2) {
         setEventInfo({ ...eventInfo, end_date: { ...eventInfo.end_date, [change!]: value } });
       }
+      setError({ ...error, date: false });
     }
-    setError({ ...error, title: false });
   };
 
   const validation = () => {
@@ -134,7 +142,7 @@ export default function AddingEvent() {
       setError((prevError) => ({ ...prevError, title: true }));
       flag = true;
     }
-    if (editor.length === 0) {
+    if (eventInfo.content.length === 0) {
       setError((prevError) => ({ ...prevError, content: true }));
       flag = true;
     }
@@ -185,7 +193,7 @@ export default function AddingEvent() {
 
     const requestData = {
       title: eventInfo.title,
-      content: editor,
+      content: eventInfo.content,
       start_date: startDate,
       end_date: endDate,
       thumbnail_images: eventInfo.thumbnail_image,
@@ -292,21 +300,25 @@ export default function AddingEvent() {
         <div>
           <div className={styles.event__divide}>
             <p className={styles.event__paragraph}>이벤트/공지 내용</p>
-            <small className={styles.event__count} />
+            <small className={
+              cn({
+                [styles.event__count]: true,
+                [styles['event__count--full']]: eventInfo.content.length === 500,
+              })
+            }
+            >
+              {`${eventInfo.content.length} / 500`}
+            </small>
           </div>
           <div>
-            <ReactQuill
-              theme="snow"
-              value={editor}
-              onChange={(e) => {
-                setError({ ...error, content: false });
-                return setEditor(e);
-              }}
-              modules={modules}
-              placeholder="이벤트/공지 내용을 입력해 주세요."
+            <textarea
+              value={eventInfo.content}
+              placeholder="이벤트 내용을 입력해주세요"
               className={cn({
                 [styles['error-border']]: error.content,
+                [styles.event__content]: true,
               })}
+              onChange={(e) => changeInput(e, 'content')}
             />
           </div>
           {error.content && <div className={styles['error-message']}>필수 입력 항목입니다.</div>}
diff --git a/src/page/ManageEvent/ModifyEvent/index.tsx b/src/page/ManageEvent/ModifyEvent/index.tsx
index 097f106e..13c122a8 100644
--- a/src/page/ManageEvent/ModifyEvent/index.tsx
+++ b/src/page/ManageEvent/ModifyEvent/index.tsx
@@ -1,10 +1,9 @@
 import { useLocation, useNavigate } from 'react-router-dom';
 import { useState } from 'react';
 import {
-  initialError, EventInfo, modules, uploadImage, Change, validateDate,
+  initialError, EventInfo, uploadImage, Change, validateDate,
 } from 'page/ManageEvent/AddingEvent/index';
 import AlertModal from 'component/common/Modal/alertModal';
-import ReactQuill from 'react-quill';
 import showToast from 'utils/ts/showToast';
 import { getCoopUrl } from 'api/uploadFile';
 import { ReactComponent as Delete } from 'assets/svg/myshop/delete.svg';
@@ -51,24 +50,43 @@ export default function ModifyEvent() {
 
   const [eventInfo, setEventInfo] = useState<EventInfo>(initialState);
   const [error, setError] = useState(initialError);
-  const [editor, setEditor] = useState(event.content);
   const [isAlertModalOpen, setIsAlertModalOpen] = useState(false);
 
   const { mutate: modifyEvent, isPending } = useModifyEvent(event.shop_id, event.event_id);
   const navigate = useNavigate();
 
-  const changeInput = (e: React.ChangeEvent<HTMLInputElement>, type: 'title' | 'start' | 'end', change?: Change) => {
+  const changeInput = (
+    e: React.ChangeEvent<HTMLInputElement> | React.ChangeEvent<HTMLTextAreaElement>,
+    type: 'title' | 'start' | 'end' | 'content',
+    change?: Change,
+  ) => {
     const value = e.target.value.replaceAll(/[\D]/gi, '');
     if (type === 'title' && e.target.value.length <= 25) {
       setEventInfo({ ...eventInfo, title: e.target.value });
+      setError({ ...error, title: false });
+    }
+    if (type === 'content' && e.target.value.length <= 500) {
+      setEventInfo({ ...eventInfo, content: e.target.value });
+      setError({ ...error, content: false });
     }
     if (type === 'start') {
-      setEventInfo({ ...eventInfo, start_date: { ...eventInfo.start_date, [change!]: value } });
+      if (change === 'year' && e.target.value.length <= 4) {
+        setEventInfo({ ...eventInfo, start_date: { ...eventInfo.start_date, [change!]: value } });
+      }
+      if (change !== 'year' && e.target.value.length <= 2) {
+        setEventInfo({ ...eventInfo, start_date: { ...eventInfo.start_date, [change!]: value } });
+      }
+      setError({ ...error, date: false });
     }
     if (type === 'end') {
-      setEventInfo({ ...eventInfo, end_date: { ...eventInfo.end_date, [change!]: value } });
+      if (change === 'year' && e.target.value.length <= 4) {
+        setEventInfo({ ...eventInfo, end_date: { ...eventInfo.end_date, [change!]: value } });
+      }
+      if (change !== 'year' && e.target.value.length <= 2) {
+        setEventInfo({ ...eventInfo, end_date: { ...eventInfo.end_date, [change!]: value } });
+      }
+      setError({ ...error, date: false });
     }
-    setError({ ...error, title: false });
   };
 
   const validation = () => {
@@ -77,7 +95,7 @@ export default function ModifyEvent() {
       setError((prevError) => ({ ...prevError, title: true }));
       flag = true;
     }
-    if (editor.length === 0) {
+    if (eventInfo.content.length === 0) {
       setError((prevError) => ({ ...prevError, content: true }));
       flag = true;
     }
@@ -129,7 +147,7 @@ export default function ModifyEvent() {
 
     const requestData = {
       title: eventInfo.title,
-      content: editor,
+      content: eventInfo.content,
       start_date: startDate,
       end_date: endDate,
       thumbnail_images: eventInfo.thumbnail_image,
@@ -215,21 +233,25 @@ export default function ModifyEvent() {
         <div>
           <div className={styles.event__divide}>
             <p className={styles.event__paragraph}>이벤트/공지 내용</p>
-            <small className={styles.event__count} />
+            <small className={
+              cn({
+                [styles.event__count]: true,
+                [styles['event__count--full']]: eventInfo.content.length === 500,
+              })
+            }
+            >
+              {`${eventInfo.content.length} / 500`}
+            </small>
           </div>
           <div>
-            <ReactQuill
-              theme="snow"
-              value={editor}
-              onChange={(e) => {
-                setError({ ...error, content: false });
-                return setEditor(e);
-              }}
-              modules={modules}
-              placeholder="이벤트/공지 내용을 입력해 주세요."
+            <textarea
+              value={eventInfo.content}
+              placeholder="이벤트 내용을 입력해주세요"
               className={cn({
                 [styles['error-border']]: error.content,
+                [styles.event__content]: true,
               })}
+              onChange={(e) => changeInput(e, 'content')}
             />
           </div>
           {error.content && <div className={styles['error-message']}>필수 입력 항목입니다.</div>}
diff --git a/src/page/ManageEvent/index.module.scss b/src/page/ManageEvent/index.module.scss
index f88fd0c6..1b973139 100644
--- a/src/page/ManageEvent/index.module.scss
+++ b/src/page/ManageEvent/index.module.scss
@@ -87,6 +87,15 @@
     height: 40px;
     padding: 5px 10px;
   }
+
+  &__content {
+    border: 1px solid #e1e1e1;
+    border-radius: 5px;
+    width: 100%;
+    height: 100px;
+    padding: 5px 10px;
+    box-sizing: border-box;
+  }
 }
 
 .event-day {
diff --git a/src/page/ModifyMenu/index.tsx b/src/page/ModifyMenu/index.tsx
index 5aa7bf4f..fe8ad314 100644
--- a/src/page/ModifyMenu/index.tsx
+++ b/src/page/ModifyMenu/index.tsx
@@ -14,11 +14,18 @@ import MenuDetail from 'page/AddMenu/components/MenuDetail';
 import GoMyShopModal from 'page/AddMenu/components/GoMyShop';
 import MobileDivide from 'page/AddMenu/components/MobileDivide';
 import useScrollToTop from 'utils/hooks/useScrollToTop';
+import useFormValidation from 'page/AddMenu/hook/useFormValidation';
 
 export default function ModifyMenu() {
   useScrollToTop();
   const { isMobile } = useMediaQuery();
   const [isComplete, setIsComplete] = useState<boolean>(false);
+  const { validateFields } = useFormValidation();
+  const toggleConfirmClick = () => {
+    if (validateFields()) {
+      setIsComplete((prevState) => !prevState);
+    }
+  };
   const { menuId } = useParams();
 
   assert(menuId != null, 'menuId가 없습니다.');
@@ -31,10 +38,6 @@ export default function ModifyMenu() {
     navigate('/owner');
   };
 
-  const toggleConfirmClick = () => {
-    setIsComplete((prevState) => !prevState);
-  };
-
   const { deleteMenuMutation } = useDeleteMenu();
 
   const handleMobileDeleteMenu = () => {
diff --git a/src/store/addMenu.ts b/src/store/addMenu.ts
index 98cae8c3..f166b53e 100644
--- a/src/store/addMenu.ts
+++ b/src/store/addMenu.ts
@@ -46,8 +46,8 @@ const useAddMenuStore = create<AddMenuStore>((set) => ({
   setImageUrl: (newImageUrl) => set((state) => ({
     imageUrl: [...state.imageUrl, newImageUrl],
   })),
-  setImageUrls: (newImageUrl) => set((state) => ({
-    imageUrl: [...state.imageUrl, ...newImageUrl],
+  setImageUrls: (newImageUrl) => set(() => ({
+    imageUrl: newImageUrl,
   })),
   removeImageUrl: (imageUrlToRemove) => set((state) => ({
     imageUrl: state.imageUrl.filter((img) => img !== imageUrlToRemove),
diff --git a/src/utils/hooks/useImagesUpload.ts b/src/utils/hooks/useImagesUpload.ts
index d5b62e6c..9eed66ac 100644
--- a/src/utils/hooks/useImagesUpload.ts
+++ b/src/utils/hooks/useImagesUpload.ts
@@ -3,7 +3,7 @@ import { useRef, useState } from 'react';
 import showToast from 'utils/ts/showToast';
 
 // 정의할 수 있는 에러 타입
-type UploadError = '413' | '415' | '404' | '422' | 'networkError' | '401' | '';
+export type UploadError = '413' | '415' | '404' | '422' | 'networkError' | '401' | '';
 
 const MAXSIZE = 1024 * 1024 * 10;
 
@@ -15,8 +15,9 @@ export default function useImagesUpload() {
 
   const saveImgFile = async () => {
     const files = imgRef.current?.files;
-
-    if (files && (files.length > 3 || imageFile.length >= 3)) {
+    console.log(files?.length)
+    // imageFile.length + files.length을 통해 저장된 이미지 + 새로 추가할 이미지의 개수를 파악함
+    if (files && (files.length > 3 || imageFile.length >= 3 || imageFile.length + files.length > 3)) {
       showToast('error', '파일은 3개까지 등록할 수 있습니다.')
       return;
     }