diff --git a/desktop/src-tauri/Cargo.lock b/desktop/src-tauri/Cargo.lock
index 5524b2c..0838703 100644
--- a/desktop/src-tauri/Cargo.lock
+++ b/desktop/src-tauri/Cargo.lock
@@ -954,6 +954,7 @@ dependencies = [
  "env_logger",
  "futures-util",
  "log",
+ "objc2 0.5.2",
  "parking_lot",
  "reqwest 0.12.28",
  "serde",
diff --git a/desktop/src-tauri/Cargo.toml b/desktop/src-tauri/Cargo.toml
index 3cb7dbb..c02d63c 100644
--- a/desktop/src-tauri/Cargo.toml
+++ b/desktop/src-tauri/Cargo.toml
@@ -28,3 +28,8 @@ reqwest = { version = "0.12", features = ["json", "multipart", "rustls-tls"], de
 base64 = "0.22"
 log = "0.4"
 env_logger = "0.11"
+
+# macOS：直接设置识别浮层 NSWindow 的集合行为（浮在全屏 App 之上）。
+# 版本对齐 tao 依赖的 objc2 0.5.x，避免重复版本。
+[target.'cfg(target_os = "macos")'.dependencies]
+objc2 = "0.5"
diff --git a/desktop/src-tauri/src/dictation.rs b/desktop/src-tauri/src/dictation.rs
index cd36af6..7295506 100644
--- a/desktop/src-tauri/src/dictation.rs
+++ b/desktop/src-tauri/src/dictation.rs
@@ -312,6 +312,33 @@ fn set_tray_tooltip(app: &AppHandle, text: &str) {
     }
 }
 
+/// 让识别浮层能浮在全屏 App 之上（macOS）：给 NSWindow 追加
+/// CanJoinAllSpaces | Stationary | FullScreenAuxiliary 集合行为。
+/// 仅 alwaysOnTop 不够——全屏 App 独占 Space，普通置顶窗口不会出现在其中，
+/// FullScreenAuxiliary 才让浮层作为辅助窗叠加到全屏 Space 上。
+/// 必须在主线程调用（Tauri setup 闭包即主线程），窗口创建后调用一次即可。
+#[cfg(target_os = "macos")]
+pub fn configure_overlay_spaces(app: &AppHandle) {
+    use objc2::{msg_send, runtime::AnyObject};
+    // NSWindowCollectionBehavior 位标志
+    const CAN_JOIN_ALL_SPACES: usize = 1 << 0;
+    const STATIONARY: usize = 1 << 4;
+    const FULL_SCREEN_AUXILIARY: usize = 1 << 8;
+    if let Some(w) = app.get_webview_window(OVERLAY) {
+        if let Ok(ptr) = w.ns_window() {
+            let ns = ptr as *mut AnyObject;
+            unsafe {
+                let cur: usize = msg_send![ns, collectionBehavior];
+                let next = cur | CAN_JOIN_ALL_SPACES | STATIONARY | FULL_SCREEN_AUXILIARY;
+                let _: () = msg_send![ns, setCollectionBehavior: next];
+            }
+        }
+    }
+}
+
+#[cfg(not(target_os = "macos"))]
+pub fn configure_overlay_spaces(_app: &AppHandle) {}
+
 fn show_overlay(app: &AppHandle) {
     if let Some(w) = app.get_webview_window(OVERLAY) {
         // 跟随光标：浮层出现在指针下方 24px，水平居中
diff --git a/desktop/src-tauri/src/lib.rs b/desktop/src-tauri/src/lib.rs
index 7072c5c..9aabdf3 100644
--- a/desktop/src-tauri/src/lib.rs
+++ b/desktop/src-tauri/src/lib.rs
@@ -132,6 +132,8 @@ pub fn run() {
             if let Err(e) = app.global_shortcut().register(s.hotkey.as_str()) {
                 log::error!("register hotkey failed: {e}");
             }
+            // 识别浮层可浮在全屏 App 之上（终端/浏览器全屏时也能看到浮层）
+            dictation::configure_overlay_spaces(&handle);
             // 首次启动 → 引导窗（11F）；之后均静默启动（仅托盘常驻）
             if !s.onboarding_done {
                 if let Some(w) = app.get_webview_window("onboarding") {