diff --git a/cmd/daemon.go b/cmd/daemon.go
new file mode 100644
index 0000000..e311030
--- /dev/null
+++ b/cmd/daemon.go
@@ -0,0 +1,28 @@
+/*
+Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+*/
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/mikuta0407/kuchihira-bot/internal/core"
+	"github.com/spf13/cobra"
+)
+
+// daemonCmd represents the daemon command
+var daemonCmd = &cobra.Command{
+	Use:   "daemon",
+	Short: "post kuchiwohiraku new item in daemon mode",
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println("daemon called")
+		if err := core.DaemonStart(debug); err != nil {
+			fmt.Println(err)
+		}
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(daemonCmd)
+	daemonCmd.Flags().BoolVar(&debug, "debug", false, "debug(default: false)")
+}
diff --git a/internal/core/daemon.go b/internal/core/daemon.go
new file mode 100644
index 0000000..d3cad33
--- /dev/null
+++ b/internal/core/daemon.go
@@ -0,0 +1,50 @@
+package core
+
+import (
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/mikuta0407/kuchihira-bot/internal/discord"
+)
+
+func DaemonStart(isDebug bool) error {
+	if isDebug {
+		fmt.Println("==== DRY RUN MODE!!! ====")
+	}
+
+	// RSS取得
+	var items []Item
+	var latestGUID string
+	var err error
+	for {
+		items, latestGUID, err = getNewPost(kuchihiraCfg.RSSURL)
+		if err != nil && !errors.Is(err, ErrorNoUpdate) {
+			// discord.DoPost(discordCfg, "Failed: Get RSS, "+err.Error(), isDebug)
+			fmt.Println(err)
+		}
+
+		if latestGUID != "" {
+			if len(items) != 1 {
+				discord.DoPost(discordCfg, "Warning: Multi publish detected", isDebug)
+			}
+			if err := saveLastGUID(latestGUID); err != nil {
+				discord.DoPost(discordCfg, "Failed: saveLastGUID: "+latestGUID, isDebug)
+			}
+
+			for _, v := range items {
+				if err := post(v, isDebug); err != nil {
+					return err
+				}
+				if len(items) != 1 {
+					time.Sleep(time.Second * 2)
+				}
+			}
+
+		}
+		time.Sleep(time.Second * 20)
+
+	}
+
+	return nil
+}