diff --git a/src/chat/knowledge/src/ie_process.py b/src/chat/knowledge/src/ie_process.py
index 0bbe2169..ddc5eb02 100644
--- a/src/chat/knowledge/src/ie_process.py
+++ b/src/chat/knowledge/src/ie_process.py
@@ -6,7 +6,7 @@ from .global_logger import logger
 from . import prompt_template
 from .lpmmconfig import global_config, INVALID_ENTITY
 from .llm_client import LLMClient
-from .utils.json_fix import fix_broken_generated_json
+from .utils.json_fix import new_fix_broken_generated_json
 
 
 def _entity_extract(llm_client: LLMClient, paragraph: str) -> List[str]:
@@ -24,7 +24,7 @@ def _entity_extract(llm_client: LLMClient, paragraph: str) -> List[str]:
     if "]" in request_result:
         request_result = request_result[: request_result.rindex("]") + 1]
 
-    entity_extract_result = json.loads(fix_broken_generated_json(request_result))
+    entity_extract_result = json.loads(new_fix_broken_generated_json(request_result))
 
     entity_extract_result = [
         entity
@@ -53,7 +53,7 @@ def _rdf_triple_extract(llm_client: LLMClient, paragraph: str, entities: list) -
     if "]" in request_result:
         request_result = request_result[: request_result.rindex("]") + 1]
 
-    entity_extract_result = json.loads(fix_broken_generated_json(request_result))
+    entity_extract_result = json.loads(new_fix_broken_generated_json(request_result))
 
     for triple in entity_extract_result:
         if len(triple) != 3 or (triple[0] is None or triple[1] is None or triple[2] is None) or "" in triple:
diff --git a/src/chat/knowledge/src/utils/json_fix.py b/src/chat/knowledge/src/utils/json_fix.py
index a83eb491..53fa8f36 100644
--- a/src/chat/knowledge/src/utils/json_fix.py
+++ b/src/chat/knowledge/src/utils/json_fix.py
@@ -1,4 +1,5 @@
 import json
+from json_repair import repair_json
 
 
 def _find_unclosed(json_str):
@@ -74,3 +75,24 @@ def fix_broken_generated_json(json_str: str) -> str:
         json_str += closing_map[open_char]
 
     return json_str
+
+
+def new_fix_broken_generated_json(json_str: str) -> str:
+    """
+    使用 json-repair 库修复格式错误的 JSON 字符串。
+
+    如果原始 json_str 字符串可以被 json.loads() 成功加载，则直接返回而不进行任何修改。
+
+    参数:
+        json_str (str): 需要修复的格式错误的 JSON 字符串。
+
+    返回:
+        str: 修复后的 JSON 字符串。
+    """
+    try:
+        # 尝试加载 JSON 以查看其是否有效
+        json.loads(json_str)
+        return json_str  # 如果有效则按原样返回
+    except json.JSONDecodeError:
+        # 如果无效，则尝试修复它
+        return repair_json(json_str)
diff --git a/src/individuality/identity.py b/src/individuality/identity.py
index fd0d70f3..f79da547 100644
--- a/src/individuality/identity.py
+++ b/src/individuality/identity.py
@@ -8,7 +8,7 @@ class Identity:
 
     identity_detail: List[str]  # 身份细节描述
     height: int  # 身高（厘米）
-    weight: int  # 体重（千克）
+    weight: float  # 体重（千克）
     age: int  # 年龄
     gender: str  # 性别
     appearance: str  # 外貌特征
@@ -24,7 +24,7 @@ class Identity:
         self,
         identity_detail: List[str] = None,
         height: int = 0,
-        weight: int = 0,
+        weight: float = 0,
         age: int = 0,
         gender: str = "",
         appearance: str = "",
@@ -61,7 +61,7 @@ class Identity:
 
     @classmethod
     def initialize(
-        cls, identity_detail: List[str], height: int, weight: int, age: int, gender: str, appearance: str
+        cls, identity_detail: List[str], height: int, weight: float, age: int, gender: str, appearance: str
     ) -> "Identity":
         """初始化身份特征