diff --git a/scripts/build-libbox.sh b/scripts/build-libbox.sh
index c810aba..b421a21 100644
--- a/scripts/build-libbox.sh
+++ b/scripts/build-libbox.sh
@@ -65,8 +65,15 @@ if [ "$TARGET" = "apple" ]; then
     go run ./cmd/internal/build_libbox -target apple
   fi
   echo "✅ 产物: $WORK/sing-box/Libbox.xcframework"
-  # 部署到工程引用位置(client/{macos,ios}/Frameworks/Libbox.xcframework,均 gitignore)。
-  for fw in "$REPO_ROOT/client/macos/Frameworks" "$REPO_ROOT/client/ios/Frameworks"; do
+  # 按 PLATFORM 部署到工程引用位置(均 gitignore)。⚠️ 只编某一平台时,产出的 xcframework
+  # 只含该平台 slice,**不能**覆盖到另一平台的 Frameworks(否则那端 build 缺 slice)。
+  #   空(全 Apple)→ macos + ios 都放;macos→只 macos;ios→只 ios。
+  case "$PLATFORM" in
+    macos) fws=("$REPO_ROOT/client/macos/Frameworks") ;;
+    ios)   fws=("$REPO_ROOT/client/ios/Frameworks") ;;
+    *)     fws=("$REPO_ROOT/client/macos/Frameworks" "$REPO_ROOT/client/ios/Frameworks") ;;
+  esac
+  for fw in "${fws[@]}"; do
     mkdir -p "$fw"
     rm -rf "$fw/Libbox.xcframework"
     cp -R "$WORK/sing-box/Libbox.xcframework" "$fw/"