diff --git a/cmdb-api/api/models/cmdb.py b/cmdb-api/api/models/cmdb.py
index 448ad3c..97ac349 100644
--- a/cmdb-api/api/models/cmdb.py
+++ b/cmdb-api/api/models/cmdb.py
@@ -317,5 +317,5 @@ class PreferenceTreeView(Model):
 class PreferenceRelationView(Model):
     __tablename__ = "c_preference_relation_views"
 
-    name = db.Column(db.String(8), index=True, nullable=False)
+    name = db.Column(db.String(64), index=True, nullable=False)
     cr_ids = db.Column(db.TEXT)  # [{parent_id: x, child_id: y}] TODO: JSON
diff --git a/docs/cmdb.sql b/docs/cmdb.sql
index 12582e2..e15ac05 100644
--- a/docs/cmdb.sql
+++ b/docs/cmdb.sql
@@ -828,7 +828,7 @@ CREATE TABLE `c_preference_relation_views` (
   `created_at` datetime DEFAULT NULL,
   `updated_at` datetime DEFAULT NULL,
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `name` varchar(8) NOT NULL,
+  `name` varchar(64) NOT NULL,
   `cr_ids` text,
   PRIMARY KEY (`id`),
   KEY `ix_c_preference_relation_views_deleted` (`deleted`),
diff --git a/docs/cmdb_en.sql b/docs/cmdb_en.sql
index 841aa6d..40881a9 100644
--- a/docs/cmdb_en.sql
+++ b/docs/cmdb_en.sql
@@ -828,7 +828,7 @@ CREATE TABLE `c_preference_relation_views` (
   `created_at` datetime DEFAULT NULL,
   `updated_at` datetime DEFAULT NULL,
   `id` int(11) NOT NULL AUTO_INCREMENT,
-  `name` varchar(8) NOT NULL,
+  `name` varchar(64) NOT NULL,
   `cr_ids` text,
   PRIMARY KEY (`id`),
   KEY `ix_c_preference_relation_views_deleted` (`deleted`),