diff --git a/.changelog/2512.txt b/.changelog/2512.txt
new file mode 100644
index 0000000000..6f75a6cad0
--- /dev/null
+++ b/.changelog/2512.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_clb_attachments: support param `eni_ip`
+```
\ No newline at end of file
diff --git a/tencentcloud/services/clb/data_source_tc_clb_attachments.go b/tencentcloud/services/clb/data_source_tc_clb_attachments.go
index 490fc0b3bf..08dc06d366 100644
--- a/tencentcloud/services/clb/data_source_tc_clb_attachments.go
+++ b/tencentcloud/services/clb/data_source_tc_clb_attachments.go
@@ -75,6 +75,11 @@ func DataSourceTencentCloudClbServerAttachments() *schema.Resource {
 										Computed:    true,
 										Description: "Id of the backend server.",
 									},
+									"eni_ip": {
+										Type:        schema.TypeString,
+										Computed:    true,
+										Description: "Elastic network card unique ID.",
+									},
 									"port": {
 										Type:        schema.TypeInt,
 										Computed:    true,
diff --git a/website/docs/d/clb_attachments.html.markdown b/website/docs/d/clb_attachments.html.markdown
index 58a849c8dc..417f32f9bc 100644
--- a/website/docs/d/clb_attachments.html.markdown
+++ b/website/docs/d/clb_attachments.html.markdown
@@ -40,6 +40,7 @@ In addition to all arguments above, the following attributes are exported:
   * `protocol_type` - Type of protocol within the listener, and available values include `TCP`, `UDP`, `HTTP`, `HTTPS` and `TCP_SSL`. NOTES: `TCP_SSL` is testing internally, please apply if you need to use.
   * `rule_id` - ID of the CLB listener rule.
   * `targets` - Information of the backends to be attached.
+    * `eni_ip` - Elastic network card unique ID.
     * `instance_id` - Id of the backend server.
     * `port` - Port of the backend server.
     * `weight` - Forwarding weight of the backend service, the range of [0, 100], defaults to `10`.