diff --git a/src/plugins/ai/backend.rs b/src/plugins/ai/backend.rs
index ca659da..1b1f3ba 100644
--- a/src/plugins/ai/backend.rs
+++ b/src/plugins/ai/backend.rs
@@ -337,16 +337,16 @@ fn parse_llama_output(raw: &str) -> String {
         // 清理进度动画字符 |/-\ 和转义序列 \b
         // llama-cli 的进度动画用 \b（退格）刷新，stdout 捕获后变成字面 \b
         let cleaned: String = trimmed
-            .replace("\\b", "")  // 退格转义
+            .replace("\\b", "")
             .chars()
             .filter(|c| !"|\\-/".contains(*c))
-            .collect();
-        let cleaned = cleaned.trim();
-        if cleaned.is_empty() {
+            .collect::<String>();
+        let cleaned_str = cleaned.trim();
+        if cleaned_str.is_empty() {
             continue;
         }
 
-        reply_lines.push(cleaned);
+        reply_lines.push(cleaned_str.to_string());
     }
 
     reply_lines.join("\n").trim().to_string()
@@ -359,12 +359,12 @@ mod tests {
     #[test]
     fn test_parse_llama_output() {
         // 进度动画和回复在同一行，用 \b 分隔
-        let raw = "  █  █  build      : b1-fdb1db8\n\
+        let raw = "  build      : b1-fdb1db8\n\
 model      : model_store/llm/qwen2.5-0.5b-q4_k_m.gguf\n\
 \n\
 > hello\n\
 \n\
-\\b-\\b\\\\\\b|\\b/\\b-\\b\\\\\\b|\\b/\\b \b汪！\n\
+\\b-\\b\\\\\\b|\\b/\\b-\\b\\\\\\b|\\b/\\b 汪！\n\
 \n\
 [ Prompt: 31.1 t/s | Generation: 26.3 t/s ]\n\
 \n\