diff --git a/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/separation/persistence.rs b/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/separation/persistence.rs
index a2f0728c4..00221e9a8 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/separation/persistence.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/separation/persistence.rs
@@ -159,6 +159,12 @@ pub fn read_separation_state(path: &Path) -> Result<SeparationState, String> {
     Ok(state)
 }
 
+pub async fn read_separation_state_async(path: PathBuf) -> Result<SeparationState, String> {
+    tokio::task::spawn_blocking(move || read_separation_state(&path))
+        .await
+        .map_err(|error| format!("读取 separation state 任务失败：{error}"))?
+}
+
 pub fn separation_dto(state: &SeparationState) -> SeparationDTO {
     app_log!(
         "ui_separation.dto bound_nodes={} problematic_nodes={} remaining_trees={}",
diff --git a/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/separation/workflow/mod.rs b/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/separation/workflow/mod.rs
index fb1c1e4dd..7a24146fc 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/separation/workflow/mod.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/ui_editor/commands/separation/workflow/mod.rs
@@ -9,7 +9,7 @@ pub use patch::apply_batch_patch;
 use self::batch::next_image_batch_with_size;
 use super::model::*;
 use super::persistence::{
-    project_relative_path, read_separation_state, separation_dto, separation_sidecar_dir,
+    project_relative_path, read_separation_state_async, separation_dto, separation_sidecar_dir,
     separation_state_path, write_separation_state,
 };
 use super::prompt::gen_extract_prompt;
@@ -42,7 +42,13 @@ pub(crate) async fn separate_ui_impl(
         );
         error
     })?;
-    fs::create_dir_all(&sidecar).map_err(|error| {
+    tokio::task::spawn_blocking({
+        let sidecar = sidecar.clone();
+        move || fs::create_dir_all(sidecar)
+    })
+    .await
+    .map_err(|error| format!("创建 separation sidecar 任务失败：{error}"))?
+    .map_err(|error| {
         app_log!(
             "ui_separation.error stage=sidecar_create asset_id={} error={error}",
             asset_id
@@ -53,13 +59,15 @@ pub(crate) async fn separate_ui_impl(
     let restored = state_path.exists();
     let mut separation = if restored {
         app_log!("ui_separation.state_restore.start asset_id={asset_id}");
-        read_separation_state(&state_path).map_err(|error| {
-            app_log!(
-                "ui_separation.error stage=state_restore asset_id={} error={error}",
-                asset_id
-            );
-            error
-        })?
+        read_separation_state_async(state_path.clone())
+            .await
+            .map_err(|error| {
+                app_log!(
+                    "ui_separation.error stage=state_restore asset_id={} error={error}",
+                    asset_id
+                );
+                error
+            })?
     } else {
         app_log!("ui_separation.state_construct.start asset_id={asset_id}");
         super::tree::construct_separation_state(&state)