diff --git a/.changelog/2622.txt b/.changelog/2622.txt
new file mode 100644
index 0000000000..946fb917d1
--- /dev/null
+++ b/.changelog/2622.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_clb_attachment: optimization documentation
+```
\ No newline at end of file
diff --git a/tencentcloud/services/clb/resource_tc_clb_attachment.md b/tencentcloud/services/clb/resource_tc_clb_attachment.md
index 1de35f8bfc..c91e27f799 100644
--- a/tencentcloud/services/clb/resource_tc_clb_attachment.md
+++ b/tencentcloud/services/clb/resource_tc_clb_attachment.md
@@ -1,7 +1,26 @@
 Provides a resource to create a CLB attachment.
 
+~> **NOTE:** This resource is designed to manage the entire set of binding relationships associated with a particular CLB (Cloud Load Balancer). As such, it does not allow the simultaneous use of this resource for the same CLB across different contexts or environments.
+
+
 Example Usage
 
+Bind a Cvm instance
+```hcl
+resource "tencentcloud_clb_attachment" "foo" {
+  clb_id      = "lb-k2zjp9lv"
+  listener_id = "lbl-hh141sn9"
+  rule_id     = "loc-4xxr2cy7"
+
+  targets {
+    instance_id = "ins-1flbqyp8"
+    port        = 80
+    weight      = 10
+  }
+}
+```
+
+Bind multiple Cvm instances
 ```hcl
 resource "tencentcloud_clb_attachment" "foo" {
   clb_id      = "lb-k2zjp9lv"
@@ -13,9 +32,29 @@ resource "tencentcloud_clb_attachment" "foo" {
     port        = 80
     weight      = 10
   }
+  
+  targets {
+    instance_id = "ins-ekloqpa1"
+    port        = 81
+    weight      = 10
+  }
 }
 ```
 
+Bind backend target is ENI
+```hcl
+resource "tencentcloud_clb_attachment" "foo" {
+  clb_id      = "lb-k2zjp9lv"
+  listener_id = "lbl-hh141sn9"
+  rule_id     = "loc-4xxr2cy7"
+  
+  targets {
+    eni_ip      = "example-ip"
+    port        = 23
+    weight      = 50
+  }
+}
+```
 Import
 
 CLB attachment can be imported using the id, e.g.
diff --git a/website/docs/r/clb_attachment.html.markdown b/website/docs/r/clb_attachment.html.markdown
index 055d8b2bb0..b8eaf50e22 100644
--- a/website/docs/r/clb_attachment.html.markdown
+++ b/website/docs/r/clb_attachment.html.markdown
@@ -11,8 +11,28 @@ description: |-
 
 Provides a resource to create a CLB attachment.
 
+~> **NOTE:** This resource is designed to manage the entire set of binding relationships associated with a particular CLB (Cloud Load Balancer). As such, it does not allow the simultaneous use of this resource for the same CLB across different contexts or environments.
+
 ## Example Usage
 
+### Bind a Cvm instance
+
+```hcl
+resource "tencentcloud_clb_attachment" "foo" {
+  clb_id      = "lb-k2zjp9lv"
+  listener_id = "lbl-hh141sn9"
+  rule_id     = "loc-4xxr2cy7"
+
+  targets {
+    instance_id = "ins-1flbqyp8"
+    port        = 80
+    weight      = 10
+  }
+}
+```
+
+### Bind multiple Cvm instances
+
 ```hcl
 resource "tencentcloud_clb_attachment" "foo" {
   clb_id      = "lb-k2zjp9lv"
@@ -24,6 +44,28 @@ resource "tencentcloud_clb_attachment" "foo" {
     port        = 80
     weight      = 10
   }
+
+  targets {
+    instance_id = "ins-ekloqpa1"
+    port        = 81
+    weight      = 10
+  }
+}
+```
+
+### Bind backend target is ENI
+
+```hcl
+resource "tencentcloud_clb_attachment" "foo" {
+  clb_id      = "lb-k2zjp9lv"
+  listener_id = "lbl-hh141sn9"
+  rule_id     = "loc-4xxr2cy7"
+
+  targets {
+    eni_ip = "example-ip"
+    port   = 23
+    weight = 50
+  }
 }
 ```