diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6f0333c4..0bdb6f64 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # developing
 - [fix: refactor Count method](https://github.com/beego/beego/pull/5300)
-
+- [support db_type in ddl ](https://github.com/beego/beego/pull/5404)
 # v2.1.1
 - [httplib: fix unstable unit test which use the httplib.org](https://github.com/beego/beego/pull/5232)
 - [rft: remove adapter package](https://github.com/beego/beego/pull/5239)
diff --git a/client/orm/ddl.go b/client/orm/ddl.go
index f5d3c3a6..ce1a6061 100644
--- a/client/orm/ddl.go
+++ b/client/orm/ddl.go
@@ -65,8 +65,9 @@ func getDbCreateSQL(mc *imodels.ModelCache, al *alias) (queries []string, tableI
 		for i, fi := range mi.Fields.FieldsDB {
 			column := fmt.Sprintf("    %s%s%s ", Q, fi.Column, Q)
 			col := getColumnTyp(al, fi)
-
-			if fi.Auto {
+			if fi.DBType != "" {
+				column += fi.DBType
+			} else if fi.Auto {
 				switch al.Driver {
 				case DRSqlite, DRPostgres:
 					column += T["auto"]
diff --git a/client/orm/ddl_test.go b/client/orm/ddl_test.go
index 265ca2ee..237664c7 100644
--- a/client/orm/ddl_test.go
+++ b/client/orm/ddl_test.go
@@ -42,6 +42,12 @@ type ModelWithEmptyComments struct {
 	Email    string `orm:"size(100);description()"`
 	Password string `orm:"size(100);description()"`
 }
+type ModelWithDBTypes struct {
+	ID       int    `orm:"column(id);description();db_type(bigserial NOT NULL PRIMARY KEY)"`
+	UserName string `orm:"size(30);unique;description()"`
+	Email    string `orm:"size(100);description()"`
+	Password string `orm:"size(100);description()"`
+}
 
 func TestGetDbCreateSQLWithComment(t *testing.T) {
 	type TestCase struct {
@@ -58,14 +64,18 @@ func TestGetDbCreateSQLWithComment(t *testing.T) {
 		testCases = append(testCases, TestCase{name: "model with comments for MySQL", model: &ModelWithComments{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithComments`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS `model_with_comments` (\n    `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY COMMENT 'user id',\n    `user_name` varchar(30) NOT NULL DEFAULT ''  UNIQUE COMMENT 'user name',\n    `email` varchar(100) NOT NULL DEFAULT ''  COMMENT 'email',\n    `password` varchar(100) NOT NULL DEFAULT ''  COMMENT 'password'\n) ENGINE=INNODB;", wantErr: nil})
 		testCases = append(testCases, TestCase{name: "model without comments for MySQL", model: &ModelWithoutComments{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithoutComments`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS `model_without_comments` (\n    `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY,\n    `user_name` varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    `email` varchar(100) NOT NULL DEFAULT '' ,\n    `password` varchar(100) NOT NULL DEFAULT '' \n) ENGINE=INNODB;", wantErr: nil})
 		testCases = append(testCases, TestCase{name: "model with empty comments for MySQL", model: &ModelWithEmptyComments{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithEmptyComments`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS `model_with_empty_comments` (\n    `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY,\n    `user_name` varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    `email` varchar(100) NOT NULL DEFAULT '' ,\n    `password` varchar(100) NOT NULL DEFAULT '' \n) ENGINE=INNODB;", wantErr: nil})
+		testCases = append(testCases, TestCase{name: "model with dpType for MySQL", model: &ModelWithDBTypes{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithDBTypes`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS `model_with_d_b_types` (\n    `id` bigserial NOT NULL PRIMARY KEY,\n    `user_name` varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    `email` varchar(100) NOT NULL DEFAULT '' ,\n    `password` varchar(100) NOT NULL DEFAULT '' \n) ENGINE=INNODB;", wantErr: nil})
 	case DRPostgres:
 		testCases = append(testCases, TestCase{name: "model with comments for Postgres", model: &ModelWithComments{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithComments`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS \"model_with_comments\" (\n    \"id\" serial NOT NULL PRIMARY KEY,\n    \"user_name\" varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    \"email\" varchar(100) NOT NULL DEFAULT '' ,\n    \"password\" varchar(100) NOT NULL DEFAULT '' \n);\nCOMMENT ON COLUMN \"model_with_comments\".\"id\" is 'user id';\nCOMMENT ON COLUMN \"model_with_comments\".\"user_name\" is 'user name';\nCOMMENT ON COLUMN \"model_with_comments\".\"email\" is 'email';\nCOMMENT ON COLUMN \"model_with_comments\".\"password\" is 'password';", wantErr: nil})
 		testCases = append(testCases, TestCase{name: "model without comments for Postgres", model: &ModelWithoutComments{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithoutComments`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS \"model_without_comments\" (\n    \"id\" serial NOT NULL PRIMARY KEY,\n    \"user_name\" varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    \"email\" varchar(100) NOT NULL DEFAULT '' ,\n    \"password\" varchar(100) NOT NULL DEFAULT '' \n);", wantErr: nil})
 		testCases = append(testCases, TestCase{name: "model with empty comments for Postgres", model: &ModelWithEmptyComments{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithEmptyComments`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS \"model_with_empty_comments\" (\n    \"id\" serial NOT NULL PRIMARY KEY,\n    \"user_name\" varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    \"email\" varchar(100) NOT NULL DEFAULT '' ,\n    \"password\" varchar(100) NOT NULL DEFAULT '' \n);", wantErr: nil})
+		testCases = append(testCases, TestCase{name: "model with dpType for Postgres", model: &ModelWithDBTypes{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithDBTypes`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS \"model_with_d_b_types\" (\n    \"id\" bigserial NOT NULL PRIMARY KEY,\n    \"user_name\" varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    \"email\" varchar(100) NOT NULL DEFAULT '' ,\n    \"password\" varchar(100) NOT NULL DEFAULT '' \n);", wantErr: nil})
 	case DRSqlite:
 		testCases = append(testCases, TestCase{name: "model with comments for Sqlite", model: &ModelWithComments{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithComments`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS `model_with_comments` (\n    `id` integer NOT NULL PRIMARY KEY AUTOINCREMENT,\n    `user_name` varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    `email` varchar(100) NOT NULL DEFAULT '' ,\n    `password` varchar(100) NOT NULL DEFAULT '' \n);", wantErr: nil})
 		testCases = append(testCases, TestCase{name: "model without comments for Sqlite", model: &ModelWithoutComments{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithoutComments`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS `model_without_comments` (\n    `id` integer NOT NULL PRIMARY KEY AUTOINCREMENT,\n    `user_name` varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    `email` varchar(100) NOT NULL DEFAULT '' ,\n    `password` varchar(100) NOT NULL DEFAULT '' \n);", wantErr: nil})
 		testCases = append(testCases, TestCase{name: "model with empty comments for Sqlite", model: &ModelWithEmptyComments{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithEmptyComments`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS `model_with_empty_comments` (\n    `id` integer NOT NULL PRIMARY KEY AUTOINCREMENT,\n    `user_name` varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    `email` varchar(100) NOT NULL DEFAULT '' ,\n    `password` varchar(100) NOT NULL DEFAULT '' \n);", wantErr: nil})
+		testCases = append(testCases, TestCase{name: "model with dpType for Sqlite", model: &ModelWithDBTypes{}, wantSQL: "-- --------------------------------------------------\n--  Table Structure for `github.com/beego/beego/v2/client/orm.ModelWithDBTypes`\n-- --------------------------------------------------\nCREATE TABLE IF NOT EXISTS `model_with_d_b_types` (\n    `id` bigserial NOT NULL PRIMARY KEY,\n    `user_name` varchar(30) NOT NULL DEFAULT ''  UNIQUE,\n    `email` varchar(100) NOT NULL DEFAULT '' ,\n    `password` varchar(100) NOT NULL DEFAULT '' \n);", wantErr: nil})
+
 	}
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
diff --git a/client/orm/internal/models/models_info_f.go b/client/orm/internal/models/models_info_f.go
index 3e5e4d6b..474935b4 100644
--- a/client/orm/internal/models/models_info_f.go
+++ b/client/orm/internal/models/models_info_f.go
@@ -140,6 +140,7 @@ type FieldInfo struct {
 	OnDelete            string
 	Description         string
 	TimePrecision       *int
+	DBType              string
 }
 
 // NewFieldInfo new field info
@@ -308,6 +309,7 @@ checkType:
 	fi.Null = attrs["null"]
 	fi.Index = attrs["index"]
 	fi.Auto = attrs["auto"]
+	fi.DBType = tags["db_type"]
 	fi.Pk = attrs["pk"]
 	fi.Unique = attrs["unique"]
 
diff --git a/client/orm/internal/models/models_utils.go b/client/orm/internal/models/models_utils.go
index b5204606..9e950abb 100644
--- a/client/orm/internal/models/models_utils.go
+++ b/client/orm/internal/models/models_utils.go
@@ -48,6 +48,7 @@ var supportTag = map[string]int{
 	"type":         2,
 	"description":  2,
 	"precision":    2,
+	"db_type":      2,
 }
 
 type fn func(string) string