diff --git a/src/App.tsx b/src/App.tsx
index 79dafc5..1db6007 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1151,7 +1151,11 @@ export const App = () => {
                 account={composeAccount}
                 api={services.api}
                 onSubmit={handleSubmit}
-                replyingTo={replyTarget ? { id: replyTarget.id, summary: replySummary ?? "" } : null}
+                replyingTo={
+                  replyTarget
+                    ? { id: replyTarget.id, summary: replySummary ?? "", spoilerText: replyTarget.spoilerText }
+                    : null
+                }
                 onCancelReply={() => {
                   setReplyTarget(null);
                   setMentionSeed(null);
@@ -1343,7 +1347,11 @@ export const App = () => {
         composeAccountSelector={composeAccountSelector}
         api={services.api}
         onSubmit={handleSubmit}
-        replyingTo={replyTarget ? { id: replyTarget.id, summary: replySummary ?? "" } : null}
+        replyingTo={
+          replyTarget
+            ? { id: replyTarget.id, summary: replySummary ?? "", spoilerText: replyTarget.spoilerText }
+            : null
+        }
         onCancelReply={() => {
           setReplyTarget(null);
           setMentionSeed(null);
diff --git a/src/ui/components/ComposeBox.tsx b/src/ui/components/ComposeBox.tsx
index 67e947c..7dd849b 100644
--- a/src/ui/components/ComposeBox.tsx
+++ b/src/ui/components/ComposeBox.tsx
@@ -49,7 +49,7 @@ export const ComposeBox = ({
     files: File[];
     spoilerText: string;
   }) => Promise<boolean>;
-  replyingTo: { id: string; summary: string } | null;
+  replyingTo: { id: string; summary: string; spoilerText: string } | null;
   onCancelReply: () => void;
   mentionText: string | null;
   accountSelector?: React.ReactNode;
@@ -302,6 +302,21 @@ export const ComposeBox = ({
     }
   }, [mentionText]);
 
+  useEffect(() => {
+    if (!replyingTo) {
+      setCwEnabled(false);
+      setCwText("");
+      return;
+    }
+    if (!replyingTo.spoilerText) {
+      setCwEnabled(false);
+      setCwText("");
+      return;
+    }
+    setCwEnabled(true);
+    setCwText(replyingTo.spoilerText);
+  }, [replyingTo?.id, replyingTo?.spoilerText]);
+
   // 이모지 패널이 열리면 이모지 로드
   useEffect(() => {
     if (emojiPanelOpen && account) {
diff --git a/src/ui/components/MobileMenus.tsx b/src/ui/components/MobileMenus.tsx
index 81b3992..1efb959 100644
--- a/src/ui/components/MobileMenus.tsx
+++ b/src/ui/components/MobileMenus.tsx
@@ -18,7 +18,7 @@ type MobileComposeMenuProps = {
     files: File[];
     spoilerText: string;
   }) => Promise<boolean>;
-  replyingTo: { id: string; summary: string } | null;
+  replyingTo: { id: string; summary: string; spoilerText: string } | null;
   onCancelReply: () => void;
   mentionText: string | null;
 };