diff --git a/openapi/generate_test.go b/openapi/generate_test.go
index 1f4ab87..2b93cd5 100644
--- a/openapi/generate_test.go
+++ b/openapi/generate_test.go
@@ -19,8 +19,8 @@ import (
 
 func TestGenerate_AddApiDoc(t *testing.T) {
 	type Category struct {
-		ID   int64  `json:"id" description:"分类ID"`
-		Name string `json:"name" description:"分类名称"`
+		ID   int64  `json:"id" description:"分类ID" binding:"required,min=10,max=100"`
+		Name string `json:"name" description:"分类名称" binding:"required,min=8"`
 	}
 	type Product struct {
 		ID         int64             `json:"id,omitempty" description:"产品ID" example:"1001" required:"true" binding:"required"`
diff --git a/openapi/schema.go b/openapi/schema.go
index c7ef10d..6d71d25 100644
--- a/openapi/schema.go
+++ b/openapi/schema.go
@@ -81,7 +81,8 @@ func GenerateOpenAPISchema(s any) *openapi3.SchemaRef {
 		}
 	}
 
-	return generateSchemaRecursive(tType, make(map[string]bool))
+	schema := generateSchemaRecursive(tType, make(map[string]bool))
+	return schema
 }
 
 // 生成 schema