diff --git a/backend/db/migrate/schema.go b/backend/db/migrate/schema.go
index 0bae29d..e895f12 100644
--- a/backend/db/migrate/schema.go
+++ b/backend/db/migrate/schema.go
@@ -762,7 +762,7 @@ var (
 	// WorkspaceFilesColumns holds the columns for the "workspace_files" table.
 	WorkspaceFilesColumns = []*schema.Column{
 		{Name: "id", Type: field.TypeUUID},
-		{Name: "path", Type: field.TypeString},
+		{Name: "path", Type: field.TypeString, Size: 2147483647},
 		{Name: "content", Type: field.TypeString, Nullable: true, Size: 2147483647},
 		{Name: "hash", Type: field.TypeString},
 		{Name: "language", Type: field.TypeString, Nullable: true},
diff --git a/backend/ent/schema/workspacefile.go b/backend/ent/schema/workspacefile.go
index e042c80..47da4ce 100644
--- a/backend/ent/schema/workspacefile.go
+++ b/backend/ent/schema/workspacefile.go
@@ -32,7 +32,7 @@ func (WorkspaceFile) Fields() []ent.Field {
 		field.UUID("id", uuid.UUID{}),
 		field.UUID("user_id", uuid.UUID{}).Comment("关联的用户ID"),
 		field.UUID("workspace_id", uuid.UUID{}).Comment("关联的工作区ID"),
-		field.String("path").Validate(func(s string) error {
+		field.Text("path").Validate(func(s string) error {
 			if s == "" {
 				return fmt.Errorf("path cannot be empty")
 			}
diff --git a/backend/migration/000019_alter_workspace_files_path_column.down.sql b/backend/migration/000019_alter_workspace_files_path_column.down.sql
new file mode 100644
index 0000000..0f0d477
--- /dev/null
+++ b/backend/migration/000019_alter_workspace_files_path_column.down.sql
@@ -0,0 +1,4 @@
+-- Alter workspace_files table to change path column from TEXT to VARCHAR(255)
+-- Note: This operation may fail if any existing path values exceed 255 characters
+ALTER TABLE workspace_files
+ALTER COLUMN path TYPE VARCHAR(255);
\ No newline at end of file
diff --git a/backend/migration/000019_alter_workspace_files_path_column.up.sql b/backend/migration/000019_alter_workspace_files_path_column.up.sql
new file mode 100644
index 0000000..00e3c22
--- /dev/null
+++ b/backend/migration/000019_alter_workspace_files_path_column.up.sql
@@ -0,0 +1,3 @@
+-- Alter workspace_files table to change path column from VARCHAR(255) to TEXT
+ALTER TABLE workspace_files
+ALTER COLUMN path TYPE TEXT;
\ No newline at end of file