diff --git a/commands/chat.go b/commands/chat.go
index 7e2b0a2..d476356 100644
--- a/commands/chat.go
+++ b/commands/chat.go
@@ -28,7 +28,7 @@ var ChatCommand *Command = &Command{
 	Category:                   Chatting,
 	RegisterApplicationCommand: true,
 	RegisterMessageCommand:     false,
-	Flags:                      CommandFlagsIsRegistered,
+	Flags:                      CommandFlagsIsRegistered | CommandFlagsIsBlocked,
 	ChatInputRun: func(ctx *ChatInputContext) error {
 		i := ctx.Inter
 		i.DeferReply(&discordgo.InteractionResponseData{})
diff --git a/commands/dataLength.go b/commands/dataLength.go
index 974cec8..b7941ae 100644
--- a/commands/dataLength.go
+++ b/commands/dataLength.go
@@ -44,7 +44,7 @@ var DataLengthCommand *Command = &Command{
 	Category:                   General,
 	RegisterApplicationCommand: true,
 	RegisterMessageCommand:     true,
-	Flags:                      CommandFlagsIsRegistered,
+	Flags:                      CommandFlagsIsRegistered | CommandFlagsIsBlocked,
 	MessageRun: func(ctx *MsgContext) error {
 		return dataLengthRun(ctx.Msg.Session, ctx.Msg, ctx.Msg.Author.Username, ctx.Msg.Author.ID)
 	},
diff --git a/commands/deleteLearnedData.go b/commands/deleteLearnedData.go
index 26fdff7..9fb2b5e 100644
--- a/commands/deleteLearnedData.go
+++ b/commands/deleteLearnedData.go
@@ -32,7 +32,7 @@ var DeleteLearnedDataCommand *Command = &Command{
 	Category:                   Chatting,
 	RegisterApplicationCommand: true,
 	RegisterMessageCommand:     true,
-	Flags:                      CommandFlagsIsRegistered,
+	Flags:                      CommandFlagsIsRegistered | CommandFlagsIsBlocked,
 	MessageRun: func(ctx *MsgContext) error {
 		command := strings.Join(*ctx.Args, " ")
 		if command == "" {
diff --git a/commands/deregister.go b/commands/deregister.go
index 4c3424b..c9cd356 100644
--- a/commands/deregister.go
+++ b/commands/deregister.go
@@ -19,7 +19,7 @@ var DeregisterCommand *Command = &Command{
 	Category:                   General,
 	RegisterMessageCommand:     true,
 	RegisterApplicationCommand: true,
-	Flags:                      CommandFlagsIsRegistered,
+	Flags:                      CommandFlagsIsRegistered | CommandFlagsIsBlocked,
 	MessageRun: func(ctx *MsgContext) error {
 		return deregisterRun(ctx.Msg, ctx.Msg.Author.ID, ctx.Msg.Session.State.User.Username)
 	},
diff --git a/commands/discommand.go b/commands/discommand.go
index 0c6f874..f4f31be 100644
--- a/commands/discommand.go
+++ b/commands/discommand.go
@@ -84,6 +84,7 @@ const (
 const (
 	CommandFlagsIsDeveloper CommandFlags = 1 << iota
 	CommandFlagsIsRegistered
+	CommandFlagsIsBlocked
 )
 
 var (
@@ -151,6 +152,17 @@ func (d *DiscommandStruct) MessageRun(name string, s *discordgo.Session, msg *di
 			return nil
 		}
 
+		blocked, reason := databases.Database.IsUserBlocked(m.Author.ID)
+		if command.Flags&CommandFlagsIsBlocked != 0 && blocked {
+			user, _ := s.User(m.Author.ID)
+			utils.NewMessageSender(m).
+				AddComponents(utils.GetUserIsBlockedContainer(user.GlobalName, reason)).
+				SetComponentsV2(true).
+				SetReply(true).
+				Send()
+			return nil
+		}
+
 		return command.MessageRun(&MsgContext{m, &args, command})
 	}
 	return nil
@@ -186,6 +198,17 @@ func (d *DiscommandStruct) ChatInputRun(name string, s *discordgo.Session, inter
 			return nil
 		}
 
+		blocked, reason := databases.Database.IsUserBlocked(i.User.ID)
+		if command.Flags&CommandFlagsIsBlocked != 0 && blocked {
+			user, _ := s.User(i.User.ID)
+			utils.NewMessageSender(i).
+				AddComponents(utils.GetUserIsBlockedContainer(user.GlobalName, reason)).
+				SetComponentsV2(true).
+				SetReply(true).
+				Send()
+			return nil
+		}
+
 		return command.ChatInputRun(&ChatInputContext{i, command})
 	}
 	return nil
diff --git a/commands/help.go b/commands/help.go
index 075a3cb..d98da68 100644
--- a/commands/help.go
+++ b/commands/help.go
@@ -31,6 +31,7 @@ var HelpCommand *Command = &Command{
 	Category:                   General,
 	RegisterApplicationCommand: true,
 	RegisterMessageCommand:     true,
+	Flags:                      CommandFlagsIsBlocked,
 	MessageRun: func(ctx *MsgContext) error {
 		return helpRun(ctx.Msg.Session, ctx.Msg, strings.Join(*ctx.Args, " "))
 	},
diff --git a/commands/information.go b/commands/information.go
index 9b2a972..ef46957 100644
--- a/commands/information.go
+++ b/commands/information.go
@@ -19,6 +19,7 @@ var InformationCommand *Command = &Command{
 	Category:                   General,
 	RegisterApplicationCommand: true,
 	RegisterMessageCommand:     true,
+	Flags:                      CommandFlagsIsBlocked,
 	MessageRun: func(ctx *MsgContext) error {
 		return informationRun(ctx.Msg.Session, ctx.Msg)
 	},
diff --git a/commands/learn.go b/commands/learn.go
index 06cc061..d9859fa 100644
--- a/commands/learn.go
+++ b/commands/learn.go
@@ -58,7 +58,7 @@ var LearnCommand *Command = &Command{
 	Category:                   Chatting,
 	RegisterApplicationCommand: true,
 	RegisterMessageCommand:     true,
-	Flags:                      CommandFlagsIsRegistered,
+	Flags:                      CommandFlagsIsRegistered | CommandFlagsIsBlocked,
 	MessageRun: func(ctx *MsgContext) error {
 		if len(*ctx.Args) < 2 {
 			utils.NewMessageSender(ctx.Msg).
diff --git a/commands/learnedDataList.go b/commands/learnedDataList.go
index 60bf19a..e5f4dde 100644
--- a/commands/learnedDataList.go
+++ b/commands/learnedDataList.go
@@ -53,7 +53,7 @@ var LearnedDataListCommand *Command = &Command{
 	Category:                   Chatting,
 	RegisterApplicationCommand: true,
 	RegisterMessageCommand:     true,
-	Flags:                      CommandFlagsIsRegistered,
+	Flags:                      CommandFlagsIsRegistered | CommandFlagsIsBlocked,
 	MessageRun: func(ctx *MsgContext) error {
 		var length int
 
diff --git a/commands/register.go b/commands/register.go
index a1fd972..f0a424a 100644
--- a/commands/register.go
+++ b/commands/register.go
@@ -20,6 +20,7 @@ var RegisterCommand *Command = &Command{
 	Category:                   General,
 	RegisterMessageCommand:     true,
 	RegisterApplicationCommand: true,
+	Flags:                      CommandFlagsIsBlocked,
 	MessageRun: func(ctx *MsgContext) error {
 		return registerRun(ctx.Msg, ctx.Msg.Author.ID, ctx.Msg.Session.State.User.Username)
 	},
diff --git a/databases/User.go b/databases/User.go
index aed020f..c5318dc 100644
--- a/databases/User.go
+++ b/databases/User.go
@@ -20,3 +20,9 @@ func (d *MuffinDatabase) IsUser(userId string) bool {
 	d.Users.FindOne(context.TODO(), bson.D{{Key: "user_id", Value: userId}}).Decode(&user)
 	return user != nil
 }
+
+func (d *MuffinDatabase) IsUserBlocked(userId string) (bool, string) {
+	var user User
+	d.Users.FindOne(context.TODO(), bson.D{{Key: "user_id", Value: userId}}).Decode(&user)
+	return user.Blocked, user.BlockedReason
+}
diff --git a/handler/messageCreate.go b/handler/messageCreate.go
index 4401ded..6cf7d5d 100644
--- a/handler/messageCreate.go
+++ b/handler/messageCreate.go
@@ -49,6 +49,18 @@ func MessageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
 					Send()
 				return
 			}
+
+			blocked, reason := databases.Database.IsUserBlocked(m.Author.ID)
+			if blocked {
+				user, _ := s.User(m.Author.ID)
+				utils.NewMessageSender(m).
+					AddComponents(utils.GetUserIsBlockedContainer(user.GlobalName, reason)).
+					SetComponentsV2(true).
+					SetReply(true).
+					Send()
+				return
+			}
+
 			s.ChannelTyping(m.ChannelID)
 
 			str, err := chatbot.ChatBot.GetResponse(m.Author, strings.TrimPrefix(content, "대화 "))
diff --git a/utils/embed.go b/utils/embed.go
index 946466f..ecd3aea 100644
--- a/utils/embed.go
+++ b/utils/embed.go
@@ -56,3 +56,9 @@ func GetUserIsNotRegisteredErrContainer(prefix string) *discordgo.Container {
 		Content: fmt.Sprintf("해당 기능은 등록된 사용자만 쓸 수 있어요. `%s가입`으로 가입해주새요.", prefix),
 	})
 }
+
+func GetUserIsBlockedContainer(globalName, reason string) *discordgo.Container {
+	return GetDeclineContainer(discordgo.TextDisplay{
+		Content: fmt.Sprintf("- %s님은 서비스에서 차단되었어요.\n> 사유: %s", globalName, reason),
+	})
+}