diff --git a/feature/login/src/main/java/pokitmons/pokit/LoginViewModel.kt b/feature/login/src/main/java/pokitmons/pokit/LoginViewModel.kt
index f19f7ec0..e4168cde 100644
--- a/feature/login/src/main/java/pokitmons/pokit/LoginViewModel.kt
+++ b/feature/login/src/main/java/pokitmons/pokit/LoginViewModel.kt
@@ -43,6 +43,9 @@ class LoginViewModel @Inject constructor(
             }
         }
     }
+
+    val nicknameRegex = Regex("^[a-zA-Z0-9가-힣]+$")
+
     private var duplicateNicknameJob: Job? = null
 
     private val _isBottomSheetVisible: MutableState<Boolean> = mutableStateOf(false)
@@ -134,7 +137,7 @@ class LoginViewModel @Inject constructor(
     fun checkDuplicateNickname(nickname: String) {
         duplicateNicknameJob?.cancel()
         duplicateNicknameJob = viewModelScope.launch {
-            delay(1.second())
+            delay(0.5.second())
             when (val duplicateNicknameResult = nicknameUseCase.checkDuplicateNickname(nickname)) {
                 is PokitResult.Success -> {
                     _inputNicknameState.update { duplicateNicknameState ->
@@ -147,6 +150,13 @@ class LoginViewModel @Inject constructor(
         }
     }
 
+    fun checkNicknameRegex(nickname: String): Boolean {
+        _inputNicknameState.update { duplicateNicknameState ->
+            duplicateNicknameState.copy(isRegex = nicknameRegex.matches(nickname))
+        }
+        return nicknameRegex.matches(nickname)
+    }
+
     fun setCategories() {
         val categoryNames: List<String> = listOf(
             context.getString(R.string.sports_and_leisure),
@@ -195,6 +205,10 @@ class LoginViewModel @Inject constructor(
             return (this * 1000L)
         }
 
+        private fun Double.second(): Long {
+            return (this * 1000L).toLong()
+        }
+
         private const val LIMIT_SELECTED_COUNT = 3
     }
 }
diff --git a/feature/login/src/main/java/pokitmons/pokit/model/DuplicateNicknameState.kt b/feature/login/src/main/java/pokitmons/pokit/model/DuplicateNicknameState.kt
index 62086325..75029ff8 100644
--- a/feature/login/src/main/java/pokitmons/pokit/model/DuplicateNicknameState.kt
+++ b/feature/login/src/main/java/pokitmons/pokit/model/DuplicateNicknameState.kt
@@ -2,5 +2,6 @@ package pokitmons.pokit.model
 
 data class DuplicateNicknameState(
     val nickname: String = "",
-    val isDuplicate: Boolean = true,
+    val isDuplicate: Boolean = false,
+    val isRegex: Boolean = false,
 )
diff --git a/feature/login/src/main/java/pokitmons/pokit/nickname/InputNicknameScreen.kt b/feature/login/src/main/java/pokitmons/pokit/nickname/InputNicknameScreen.kt
index 89c40626..ce096374 100644
--- a/feature/login/src/main/java/pokitmons/pokit/nickname/InputNicknameScreen.kt
+++ b/feature/login/src/main/java/pokitmons/pokit/nickname/InputNicknameScreen.kt
@@ -1,5 +1,6 @@
 package pokitmons.pokit.nickname
 
+import android.util.Log
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Spacer
@@ -65,17 +66,23 @@ fun InputNicknameScreen(
                 inputText = inputNicknameState.nickname,
                 maxLength = NICKNAME_MAX_LENGTH,
                 sub = when {
-                    inputNicknameState.nickname.length < NICKNAME_MAX_LENGTH -> stringResource(id = Login.string.input_restriction_message)
-                    !inputNicknameState.isDuplicate -> stringResource(id = Login.string.nickname_already_in_use)
-                    else -> stringResource(id = Login.string.input_max_length)
+                    inputNicknameState.isDuplicate -> stringResource(id = Login.string.nickname_already_in_use)
+                    inputNicknameState.isRegex -> stringResource(id = Login.string.input_restriction_message)
+                    inputNicknameState.nickname.length < NICKNAME_MAX_LENGTH -> stringResource(id = Login.string.input_max_length)
+                    else -> ""
                 },
-                isError = inputNicknameState.nickname.length > NICKNAME_MAX_LENGTH || !inputNicknameState.isDuplicate,
+                isError = inputNicknameState.nickname.length > NICKNAME_MAX_LENGTH || inputNicknameState.isDuplicate || inputNicknameState.isRegex,
                 hintText = stringResource(id = Login.string.input_nickname_hint),
                 onChangeText = { text ->
+                    Log.d("!! : ", text)
                     if (text.length <= NICKNAME_MAX_LENGTH) {
                         viewModel.apply {
                             inputText(text)
-                            checkDuplicateNickname(text)
+                            if (checkNicknameRegex(text)) {
+                                Log.d("!! : ", "else call")
+                                checkDuplicateNickname(text)
+                            } else {
+                            }
                         }
                     }
                 }
@@ -89,7 +96,7 @@ fun InputNicknameScreen(
             text = stringResource(id = pokitmons.pokit.login.R.string.next),
             icon = null,
             size = PokitButtonSize.LARGE,
-            enable = !inputNicknameState.isDuplicate,
+            enable = !inputNicknameState.isDuplicate && inputNicknameState.isRegex && inputNicknameState.nickname.length < NICKNAME_MAX_LENGTH,
             onClick = { onNavigateToKeywordScreen() }
         )
     }
diff --git a/feature/login/src/main/java/pokitmons/pokit/success/SignUpSuccessScreen.kt b/feature/login/src/main/java/pokitmons/pokit/success/SignUpSuccessScreen.kt
index 8fbd5d79..99412fce 100644
--- a/feature/login/src/main/java/pokitmons/pokit/success/SignUpSuccessScreen.kt
+++ b/feature/login/src/main/java/pokitmons/pokit/success/SignUpSuccessScreen.kt
@@ -9,7 +9,6 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
-import androidx.compose.material3.Icon
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
@@ -34,12 +33,6 @@ fun SignUpSuccessScreen(
             .background(color = Color.White)
             .padding(start = 20.dp, end = 20.dp, top = 20.dp, bottom = 28.dp)
     ) {
-        Icon(
-            modifier = Modifier.padding(start = 4.dp),
-            painter = painterResource(id = coreDrawable.icon_24_arrow_left),
-            contentDescription = null
-        )
-
         Column(
             modifier = Modifier
                 .fillMaxWidth()
diff --git a/feature/login/src/main/res/values/strings.xml b/feature/login/src/main/res/values/strings.xml
index 0012ad0b..a6459201 100644
--- a/feature/login/src/main/res/values/strings.xml
+++ b/feature/login/src/main/res/values/strings.xml
@@ -10,7 +10,7 @@
     <string name="input_nickname_hint">내용을 입력해주세요.</string>
     <string name="input_restriction_message">한글, 영어, 숫자로만 입력이 가능합니다.</string>
     <string name="nickname_already_in_use">사용 중인 닉네임입니다.</string>
-    <string name="input_max_length">최대 20자까지 입력 가능합니다.</string>
+    <string name="input_max_length">최대 10자까지 입력 가능합니다.</string>
     <string name="keyword_title">어떤 분야에 관심이 있으세요?</string>
     <string name="select_keyword">최대 3개를 골라주시면,\n관련 콘텐츠를 추천해드릴게요!</string>
     <string name="sports_and_leisure">스포츠/레저</string>
diff --git a/feature/settings/src/main/java/pokitmons/pokit/settings/SettingViewModel.kt b/feature/settings/src/main/java/pokitmons/pokit/settings/SettingViewModel.kt
index bf37d3eb..95697815 100644
--- a/feature/settings/src/main/java/pokitmons/pokit/settings/SettingViewModel.kt
+++ b/feature/settings/src/main/java/pokitmons/pokit/settings/SettingViewModel.kt
@@ -61,7 +61,7 @@ class SettingViewModel @Inject constructor(
     fun checkDuplicateNickname(nickname: String) {
         duplicateNicknameJob?.cancel()
         duplicateNicknameJob = viewModelScope.launch {
-            delay(1.second())
+            delay(0.5.second())
             when (val duplicateNicknameResult = nicknameUseCase.checkDuplicateNickname(nickname)) {
                 is PokitResult.Success -> {
                     _inputNicknameState.update { duplicateNicknameState ->
@@ -115,6 +115,10 @@ class SettingViewModel @Inject constructor(
         private fun Int.second(): Long {
             return (this * 1000L)
         }
+
+        private fun Double.second(): Long {
+            return (this * 1000L).toLong()
+        }
     }
 }
 
diff --git a/feature/settings/src/main/java/pokitmons/pokit/settings/setting/SettingsScreen.kt b/feature/settings/src/main/java/pokitmons/pokit/settings/setting/SettingsScreen.kt
index a5db85da..74f30ece 100644
--- a/feature/settings/src/main/java/pokitmons/pokit/settings/setting/SettingsScreen.kt
+++ b/feature/settings/src/main/java/pokitmons/pokit/settings/setting/SettingsScreen.kt
@@ -45,9 +45,10 @@ fun SettingsScreen(
             SettingItem(title = stringResource(StringResource.nickname_settings)) {
                 onNavigateToEditNickname()
             }
-            SettingItem(title = stringResource(StringResource.notification_settings)) {
-                // TODO 커스텀 토스트 메세지
-            }
+
+//            SettingItem(title = stringResource(StringResource.notification_settings)) {
+//                // TODO 커스텀 토스트 메세지
+//            }
 
             DividerItem()
 
diff --git a/feature/settings/src/main/res/values/strings.xml b/feature/settings/src/main/res/values/strings.xml
index fd7fc692..af92a543 100644
--- a/feature/settings/src/main/res/values/strings.xml
+++ b/feature/settings/src/main/res/values/strings.xml
@@ -16,6 +16,6 @@
     <string name="save">저장</string>
     <string name="input_restriction_message">한글, 영어, 숫자로만 입력이 가능합니다.</string>
     <string name="nickname_already_in_use">사용 중인 닉네임입니다.</string>
-    <string name="input_max_length">최대 20자까지 입력 가능합니다.</string>
+    <string name="input_max_length">최대 10자까지 입력 가능합니다.</string>
     <string name="input_nickname_hint">닉네임을 입력해주세요</string>
 </resources>
\ No newline at end of file