diff --git a/.changelog/3556.txt b/.changelog/3556.txt
new file mode 100644
index 0000000000..2c409cb71a
--- /dev/null
+++ b/.changelog/3556.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_eip_association: support `cdc_id` field
+```
diff --git a/tencentcloud/services/cvm/resource_tc_eip_association.go b/tencentcloud/services/cvm/resource_tc_eip_association.go
index 49be16a233..ed2b1db4f6 100644
--- a/tencentcloud/services/cvm/resource_tc_eip_association.go
+++ b/tencentcloud/services/cvm/resource_tc_eip_association.go
@@ -66,6 +66,13 @@ func ResourceTencentCloudEipAssociation() *schema.Resource {
 				},
 				Description: "Indicates an IP belongs to the `network_interface_id`. This field is conflict with `instance_id`.",
 			},
+
+			// computed
+			"cdc_id": {
+				Type:        schema.TypeString,
+				Computed:    true,
+				Description: "ID of the dedicated cluster.",
+			},
 		},
 	}
 }
diff --git a/website/docs/r/eip_association.html.markdown b/website/docs/r/eip_association.html.markdown
index 56395f5c50..26e618edf3 100644
--- a/website/docs/r/eip_association.html.markdown
+++ b/website/docs/r/eip_association.html.markdown
@@ -139,7 +139,7 @@ The following arguments are supported:
 In addition to all arguments above, the following attributes are exported:
 
 * `id` - ID of the resource.
-
+* `cdc_id` - ID of the dedicated cluster.
 
 
 ## Import