diff --git a/.changelog/2583.txt b/.changelog/2583.txt
new file mode 100644
index 0000000000..e43e2ecc56
--- /dev/null
+++ b/.changelog/2583.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+datasource/tencentcloud_mariadb_db_instances: Support `vip`, `vport`, `internet_domain`, `internet_ip`, `internet_port` field
+```
diff --git a/tencentcloud/acctest/basic.go b/tencentcloud/acctest/basic.go
index c6b72d6799..90f716a68a 100644
--- a/tencentcloud/acctest/basic.go
+++ b/tencentcloud/acctest/basic.go
@@ -940,8 +940,8 @@ const (
 	DefaultMariadbVpcId           = "vpc-k1t8ickr"
 	DefaultMariadbSecurityGroupId = "sg-7kpsbxdb"
 
-	DefaultMariadbInstanceSubnetId = "subnet-4w4twlf4"
-	DefaultMariadbInstanceVpcId    = "vpc-9m66acml"
+	DefaultMariadbInstanceSubnetId = "subnet-8fpt571a"
+	DefaultMariadbInstanceVpcId    = "vpc-axrsmmrv"
 )
 
 // End of MARIADB
diff --git a/tencentcloud/services/mariadb/data_source_tc_mariadb_db_instances.go b/tencentcloud/services/mariadb/data_source_tc_mariadb_db_instances.go
index 6697031159..6dd4c41834 100644
--- a/tencentcloud/services/mariadb/data_source_tc_mariadb_db_instances.go
+++ b/tencentcloud/services/mariadb/data_source_tc_mariadb_db_instances.go
@@ -110,6 +110,31 @@ func DataSourceTencentCloudMariadbDbInstances() *schema.Resource {
 							Computed:    true,
 							Description: "db version id.",
 						},
+						"vip": {
+							Type:        schema.TypeString,
+							Computed:    true,
+							Description: "Intranet IP address.",
+						},
+						"vport": {
+							Type:        schema.TypeInt,
+							Computed:    true,
+							Description: "Intranet port.",
+						},
+						"internet_domain": {
+							Type:        schema.TypeString,
+							Computed:    true,
+							Description: "Public network access domain name.",
+						},
+						"internet_ip": {
+							Type:        schema.TypeString,
+							Computed:    true,
+							Description: "Public IP address.",
+						},
+						"internet_port": {
+							Type:        schema.TypeInt,
+							Computed:    true,
+							Description: "Public network port.",
+						},
 						"resource_tags": {
 							Type:        schema.TypeList,
 							Computed:    true,
@@ -231,6 +256,21 @@ func dataSourceTencentCloudMariadbDbInstancesRead(d *schema.ResourceData, meta i
 			if instance.DbVersionId != nil {
 				instanceMap["db_version_id"] = instance.DbVersionId
 			}
+			if instance.Vip != nil {
+				instanceMap["vip"] = instance.Vip
+			}
+			if instance.Vport != nil {
+				instanceMap["vport"] = instance.Vport
+			}
+			if instance.WanDomain != nil {
+				instanceMap["internet_domain"] = instance.WanDomain
+			}
+			if instance.WanVip != nil {
+				instanceMap["internet_ip"] = instance.WanVip
+			}
+			if instance.WanPort != nil {
+				instanceMap["internet_port"] = instance.WanPort
+			}
 			if instance.ResourceTags != nil {
 				resourceTagsList := []interface{}{}
 				for _, resourceTags := range instance.ResourceTags {
diff --git a/tencentcloud/services/mariadb/data_source_tc_mariadb_db_instances_test.go b/tencentcloud/services/mariadb/data_source_tc_mariadb_db_instances_test.go
index d6faae65b2..cbe8cd48a2 100644
--- a/tencentcloud/services/mariadb/data_source_tc_mariadb_db_instances_test.go
+++ b/tencentcloud/services/mariadb/data_source_tc_mariadb_db_instances_test.go
@@ -20,14 +20,29 @@ func TestAccTencentCloudMariadbDbInstancesDataSource(t *testing.T) {
 				Config: testAccDataSourceMariadbDbInstances,
 				Check: resource.ComposeTestCheckFunc(
 					tcacctest.AccCheckTencentCloudDataSourceID("data.tencentcloud_mariadb_db_instances.db_instances"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.#"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.instance_id"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.instance_name"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.project_id"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.region"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.zone"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.memory"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.storage"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.vpc_id"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.subnet_id"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.db_version_id"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.vip"),
+					resource.TestCheckResourceAttrSet("data.tencentcloud_mariadb_db_instances.db_instances", "instances.0.vport"),
 				),
 			},
 		},
 	})
 }
 
-const testAccDataSourceMariadbDbInstances = `
+const testAccDataSourceMariadbDbInstances = testAccMariadbInstance + `
 
-data "tencentcloud_mariadb_db_instances" "db_instances" {}
+data "tencentcloud_mariadb_db_instances" "db_instances" {
+	depends_on = [ tencentcloud_mariadb_instance.instance ]
+}
 
 `
diff --git a/website/docs/d/mariadb_db_instances.html.markdown b/website/docs/d/mariadb_db_instances.html.markdown
index b68a482821..0a8263d49d 100644
--- a/website/docs/d/mariadb_db_instances.html.markdown
+++ b/website/docs/d/mariadb_db_instances.html.markdown
@@ -41,6 +41,9 @@ In addition to all arguments above, the following attributes are exported:
   * `db_version_id` - db version id.
   * `instance_id` - instance id.
   * `instance_name` - instance name.
+  * `internet_domain` - Public network access domain name.
+  * `internet_ip` - Public IP address.
+  * `internet_port` - Public network port.
   * `memory` - meory of instance.
   * `project_id` - project id.
   * `region` - region.
@@ -49,7 +52,9 @@ In addition to all arguments above, the following attributes are exported:
     * `tag_value` - tag value.
   * `storage` - storage of instance.
   * `subnet_id` - subnet id.
+  * `vip` - Intranet IP address.
   * `vpc_id` - vpc id.
+  * `vport` - Intranet port.
   * `zone` - available zone.