diff --git a/docs/llm_web_kit/model/lang_id.md b/docs/llm_web_kit/model/lang_id.md
index f8492313..40857518 100644
--- a/docs/llm_web_kit/model/lang_id.md
+++ b/docs/llm_web_kit/model/lang_id.md
@@ -11,10 +11,6 @@ huggingface版本：
         "common":{
             "cache_path": "~/.llm_web_kit_cache"
         },
-        "lang-id-176": {
-            "download_path": "https://dl.fbaipublicfiles.com/fasttext/supervised-models/lid.176.bin",
-            "md5": "01810bc59c6a3d2b79c79e6336612f65"
-        },
         "lang-id-218": {
             "download_path": "https://huggingface.co/facebook/fasttext-language-identification/resolve/main/model.bin?download=true",
             "sha256": "8ded5749a2ad79ae9ab7c9190c7c8b97ff20d54ad8b9527ffa50107238fc7f6a"
@@ -29,10 +25,6 @@ s3版本：
         "common":{
             "cache_path": "~/.llm_web_kit_cache"
         },
-        "lang-id-176": {
-            "download_path": "s3://web-parse-huawei/shared_resource/language/lid176.bin",
-            "md5": "01810bc59c6a3d2b79c79e6336612f65"
-        },
         "lang-id-218": {
             "download_path": "s3://web-parse-huawei/shared_resource/language/lid218e.bin",
             "sha256": "8ded5749a2ad79ae9ab7c9190c7c8b97ff20d54ad8b9527ffa50107238fc7f6a"
diff --git a/llm_web_kit/model/lang_id.py b/llm_web_kit/model/lang_id.py
index a2e898ce..e5e546bf 100644
--- a/llm_web_kit/model/lang_id.py
+++ b/llm_web_kit/model/lang_id.py
@@ -247,12 +247,9 @@ def decide_language_func(content_str: str, lang_detect: LanguageIdentification)
     language_details = None
     if lang_detect.version == '218.bin':
         first_pred = predictions[0]
-        match = re.match(r'^__label__([a-z]+)_[A-Za-z]+$', first_pred)
-        if match:
-            lang_code = match.group(1)
-        else:
-            lang_code = first_pred.replace('__label__', '').split('_')[0]
-        language_details = lang_code
+        # Extract the full label (e.g., __label__eng_Latn -> eng_Latn)
+        if first_pred.startswith('__label__'):
+            language_details = first_pred.replace('__label__', '')
 
     return {
         'language': language,
diff --git a/tests/llm_web_kit/model/test_lang_id.py b/tests/llm_web_kit/model/test_lang_id.py
index 3ff5ea5d..2c1b1f96 100644
--- a/tests/llm_web_kit/model/test_lang_id.py
+++ b/tests/llm_web_kit/model/test_lang_id.py
@@ -131,7 +131,7 @@ def test_decide_language_func():
     lang_detect.version = '218.bin'
     lang_detect.predict.return_value = (['__label__eng_Latn', '__label__zho_Hans'], [0.6, 0.4])
     result = decide_language_func('test text', lang_detect)
-    assert result == {'language': 'en', 'language_details': 'eng'}
+    assert result == {'language': 'en', 'language_details': 'eng_Latn'}
 
     # Test for empty string
     result = decide_language_func('', lang_detect)
@@ -144,7 +144,7 @@ def test_update_language_by_str():
 
         # 设置模拟函数的返回值
         mock_get_singleton_lang_detect.return_value = MagicMock()
-        mock_decide_language_func.return_value = {'language': 'en', 'language_details': 'eng'}
+        mock_decide_language_func.return_value = {'language': 'en', 'language_details': 'eng_Latn'}
 
         # 调用被测函数
         result = update_language_by_str('test text')
@@ -152,7 +152,7 @@ def test_update_language_by_str():
         # 验证返回结果
         expected_result = {
             'language': 'en',
-            'language_details': 'eng'
+            'language_details': 'eng_Latn'
         }
         assert result == expected_result, f'Expected {expected_result}, but got {result}'
         print('Test passed!')