diff --git a/runtime/datamate-python/app/db/models/annotation_management.py b/runtime/datamate-python/app/db/models/annotation_management.py
index ea60afb..a50a616 100644
--- a/runtime/datamate-python/app/db/models/annotation_management.py
+++ b/runtime/datamate-python/app/db/models/annotation_management.py
@@ -11,7 +11,7 @@ class AnnotationTemplate(Base):
 
     __tablename__ = "t_dm_annotation_templates"
 
-    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()), comment="UUID")
+    id = Column(String(64), primary_key=True, default=lambda: str(uuid.uuid4()), comment="模板ID（UUID或自定义ID）")
     name = Column(String(100), nullable=False, comment="模板名称")
     description = Column(String(500), nullable=True, comment="模板描述")
     data_type = Column(String(50), nullable=False, comment="数据类型: image/text/audio/video/timeseries/pdf/chat/html/table")
@@ -43,7 +43,7 @@ class LabelingProject(Base):
     dataset_id = Column(String(36), nullable=False, comment="数据集ID")
     name = Column(String(100), nullable=False, comment="项目名称")
     labeling_project_id = Column(String(8), nullable=False, comment="Label Studio项目ID")
-    template_id = Column(String(36), ForeignKey('t_dm_annotation_templates.id', ondelete='SET NULL'), nullable=True, comment="使用的模板ID")
+    template_id = Column(String(64), ForeignKey('t_dm_annotation_templates.id', ondelete='SET NULL'), nullable=True, comment="使用的模板ID")
     configuration = Column(JSON, nullable=True, comment="项目配置（可能包含对模板的自定义修改）")
     progress = Column(JSON, nullable=True, comment="项目进度信息")
     created_at = Column(TIMESTAMP, server_default=func.current_timestamp(), comment="创建时间")
diff --git a/scripts/db/data-annotation-init.sql b/scripts/db/data-annotation-init.sql
index 667a84c..a535e57 100644
--- a/scripts/db/data-annotation-init.sql
+++ b/scripts/db/data-annotation-init.sql
@@ -10,7 +10,7 @@ USE datamate;
 
 -- 标注配置模板表
 CREATE TABLE t_dm_annotation_templates (
-    id VARCHAR(36) PRIMARY KEY COMMENT 'UUID',
+    id VARCHAR(64) PRIMARY KEY COMMENT '模板ID（UUID或自定义ID）',
     name VARCHAR(100) NOT NULL COMMENT '模板名称',
     description VARCHAR(500) COMMENT '模板描述',
     data_type VARCHAR(50) NOT NULL COMMENT '数据类型: text/image/audio/video/pdf/timeseries/chat/html/table',
@@ -36,7 +36,7 @@ CREATE TABLE t_dm_labeling_projects (
     dataset_id VARCHAR(36) NOT NULL COMMENT '数据集ID',
     name VARCHAR(100) NOT NULL COMMENT '项目名称',
     labeling_project_id VARCHAR(8) NOT NULL COMMENT 'Label Studio项目ID',
-    template_id VARCHAR(36) NULL COMMENT '使用的模板ID',
+    template_id VARCHAR(64) NULL COMMENT '使用的模板ID',
     configuration JSON COMMENT '项目配置（可能包含对模板的自定义修改）',
     progress JSON COMMENT '项目进度信息',
     created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',