diff --git a/src/chat/memory_system/Hippocampus.py b/src/chat/memory_system/Hippocampus.py
index c30270d36..98fd4e1c7 100644
--- a/src/chat/memory_system/Hippocampus.py
+++ b/src/chat/memory_system/Hippocampus.py
@@ -1017,6 +1017,7 @@ class EntorhinalCortex:
                             "memory_items": memory_items,
                             "weight": weight,
                             "hash": memory_hash,
+                            "weight": 1.0,  # 默认权重为1.0
                             "created_time": created_time,
                             "last_modified": last_modified,
                         }
@@ -1173,6 +1174,7 @@ class EntorhinalCortex:
                                 "concept": concept,
                                 "memory_items": memory_items_json,
                                 "hash": self.hippocampus.calculate_node_hash(concept, memory_items),
+                                "weight": 1.0,  # 默认权重为1.0
                                 "created_time": data.get("created_time", current_time),
                                 "last_modified": data.get("last_modified", current_time),
                             }
diff --git a/src/common/database/sqlalchemy_models.py b/src/common/database/sqlalchemy_models.py
index d9948408a..a5b431a1c 100644
--- a/src/common/database/sqlalchemy_models.py
+++ b/src/common/database/sqlalchemy_models.py
@@ -361,6 +361,7 @@ class GraphNodes(Base):
     concept = Column(get_string_field(255), nullable=False, unique=True, index=True)
     memory_items = Column(Text, nullable=False)
     hash = Column(Text, nullable=False)
+    weight = Column(Float, nullable=False, default=1.0)
     created_time = Column(Float, nullable=False)
     last_modified = Column(Float, nullable=False)