diff --git a/src/main/java/com/team20/t4/post/PostSaveRequestDto.java b/src/main/java/com/team20/t4/post/PostSaveRequestDto.java
index aea2153..b498e33 100644
--- a/src/main/java/com/team20/t4/post/PostSaveRequestDto.java
+++ b/src/main/java/com/team20/t4/post/PostSaveRequestDto.java
@@ -4,12 +4,17 @@
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
+import javax.validation.constraints.Size;
+
 @Getter
 @NoArgsConstructor
 @AllArgsConstructor
 public class PostSaveRequestDto {
+    @Size(max = 255, message = "title은 255자 이하여야합니다.")
     private String title;
+    @Size(max = 1000, message = "content는 1000자 이하여야합니다.")
     private String content;
+    @Size(max = 255, message = "chatRoomLink는 255자 이하여야합니다.")
     private String chatRoomLink;
 //    private PlanSaveRequestDto plan;
 }