diff --git a/app/models/recruit_announcement_category.py b/app/models/recruit_announcement_category.py
index 8078b9b..ad7467e 100644
--- a/app/models/recruit_announcement_category.py
+++ b/app/models/recruit_announcement_category.py
@@ -15,5 +15,5 @@ class RecruitAnnouncementCategory(MysqlBase):
 
     id: Mapped[int] = mapped_column(BigInteger, primary_key=True, comment="主键ID(雪花)")
     announcement_id: Mapped[int] = mapped_column(BigInteger, nullable=False, comment="公告id")
-    category_name: Mapped[str] = mapped_column(String(64), nullable=False, comment="岗位大类值，如IT技术/人工智能/通信")
+    category_name: Mapped[str] = mapped_column(String(64), nullable=False, comment="岗位分类值，取自固定分类表，如后端开发/人工智能/产品经理")
     create_time: Mapped[datetime] = mapped_column(DateTime, nullable=False, comment="创建时间")
diff --git a/app/models/recruit_announcement_tag.py b/app/models/recruit_announcement_tag.py
index 61e1c97..e9f4002 100644
--- a/app/models/recruit_announcement_tag.py
+++ b/app/models/recruit_announcement_tag.py
@@ -15,5 +15,5 @@ class RecruitAnnouncementTag(MysqlBase):
 
     id: Mapped[int] = mapped_column(BigInteger, primary_key=True, comment="主键ID(雪花)")
     announcement_id: Mapped[int] = mapped_column(BigInteger, nullable=False, comment="公告id")
-    tag_name: Mapped[str] = mapped_column(String(64), nullable=False, comment="标签值，如秋招提前批/竞争力薪酬/校招")
+    tag_name: Mapped[str] = mapped_column(String(64), nullable=False, comment="标签值，如竞争力薪酬/六险一金/不限专业，不与批次、城市、学历重复")
     create_time: Mapped[datetime] = mapped_column(DateTime, nullable=False, comment="创建时间")
diff --git a/doc/recruit_announcement.sql b/doc/recruit_announcement.sql
index 7e8cd6f..086e194 100644
--- a/doc/recruit_announcement.sql
+++ b/doc/recruit_announcement.sql
@@ -78,7 +78,7 @@ CREATE TABLE `bg_recruit_announcement_batch` (
 CREATE TABLE `bg_recruit_announcement_tag` (
   `id`               BIGINT      NOT NULL COMMENT '主键ID(雪花)',
   `announcement_id`  BIGINT      NOT NULL COMMENT '公告id',
-  `tag_name`         VARCHAR(64) NOT NULL COMMENT '标签值，如秋招提前批/竞争力薪酬/校招',
+  `tag_name`         VARCHAR(64) NOT NULL COMMENT '标签值，如竞争力薪酬/六险一金/不限专业，不与批次、城市、学历重复',
   `create_time`      DATETIME    NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
   PRIMARY KEY (`id`),
   KEY `idx_announcement_id` (`announcement_id`),
@@ -106,7 +106,7 @@ CREATE TABLE `bg_recruit_announcement_city` (
 CREATE TABLE `bg_recruit_announcement_category` (
   `id`               BIGINT      NOT NULL COMMENT '主键ID(雪花)',
   `announcement_id`  BIGINT      NOT NULL COMMENT '公告id',
-  `category_name`    VARCHAR(64) NOT NULL COMMENT '岗位大类值，如IT技术/人工智能/通信',
+  `category_name`    VARCHAR(64) NOT NULL COMMENT '岗位分类值，取自固定分类表，如后端开发/人工智能/产品经理',
   `create_time`      DATETIME    NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
   PRIMARY KEY (`id`),
   KEY `idx_announcement_id` (`announcement_id`),