diff --git a/tencentcloud/resource_tc_scf_function.go b/tencentcloud/resource_tc_scf_function.go
index 089aba7640..350269b419 100644
--- a/tencentcloud/resource_tc_scf_function.go
+++ b/tencentcloud/resource_tc_scf_function.go
@@ -321,7 +321,7 @@ func resourceTencentCloudScfFunction() *schema.Resource {
 						"trigger_desc": {
 							Type:        schema.TypeString,
 							Required:    true,
-							Description: "TriggerDesc of the SCF function trigger, parameter format of `timer` is linux cron expression; parameter of `cos` type is json string `{\"event\":\"cos:ObjectCreated:*\",\"filter\":{\"Prefix\":\"\",\"Suffix\":\"\"}}`, where `event` is the cos event trigger, `Prefix` is the corresponding file prefix filter condition, `Suffix` is the suffix filter condition, if not need filter condition can not pass; `cmq` type does not pass this parameter; `ckafka` type parameter format is json string `{\"maxMsgNum\":\"1\",\"offset\":\"latest\"}`; `apigw` type parameter format is json string `{\"api\":{\"authRequired\":\"FALSE\",\"requestConfig\":{\"method\":\"ANY\"},\"isIntegratedResponse\":\"FALSE\"},\"service\":{\"serviceId\":\"service-dqzh68sg\"},\"release\":{\"environmentName\":\"test\"}}`.",
+							Description: "TriggerDesc of the SCF function trigger, parameter format of `timer` is linux cron expression; parameter of `cos` type is json string `{\"bucketUrl\":\"<name-appid>.cos.<region>.myqcloud.com\",\"event\":\"cos:ObjectCreated:*\",\"filter\":{\"Prefix\":\"\",\"Suffix\":\"\"}}`, where `bucketUrl` is cos bucket (optional), `event` is the cos event trigger, `Prefix` is the corresponding file prefix filter condition, `Suffix` is the suffix filter condition, if not need filter condition can not pass; `cmq` type does not pass this parameter; `ckafka` type parameter format is json string `{\"maxMsgNum\":\"1\",\"offset\":\"latest\"}`; `apigw` type parameter format is json string `{\"api\":{\"authRequired\":\"FALSE\",\"requestConfig\":{\"method\":\"ANY\"},\"isIntegratedResponse\":\"FALSE\"},\"service\":{\"serviceId\":\"service-dqzh68sg\"},\"release\":{\"environmentName\":\"test\"}}`.",
 						},
 					},
 				},
diff --git a/website/docs/r/scf_function.html.markdown b/website/docs/r/scf_function.html.markdown
index eb3b878e6a..6648f5ada1 100644
--- a/website/docs/r/scf_function.html.markdown
+++ b/website/docs/r/scf_function.html.markdown
@@ -71,7 +71,7 @@ The `layers` object supports the following:
 The `triggers` object supports the following:
 
 * `name` - (Required) Name of the SCF function trigger, if `type` is `ckafka`, the format of name must be `<ckafkaInstanceId>-<topicId>`; if `type` is `cos`, the name is cos bucket id, other In any case, it can be combined arbitrarily. It can only contain English letters, numbers, connectors and underscores. The maximum length is 100.
-* `trigger_desc` - (Required) TriggerDesc of the SCF function trigger, parameter format of `timer` is linux cron expression; parameter of `cos` type is json string `{"event":"cos:ObjectCreated:*","filter":{"Prefix":"","Suffix":""}}`, where `event` is the cos event trigger, `Prefix` is the corresponding file prefix filter condition, `Suffix` is the suffix filter condition, if not need filter condition can not pass; `cmq` type does not pass this parameter; `ckafka` type parameter format is json string `{"maxMsgNum":"1","offset":"latest"}`; `apigw` type parameter format is json string `{"api":{"authRequired":"FALSE","requestConfig":{"method":"ANY"},"isIntegratedResponse":"FALSE"},"service":{"serviceId":"service-dqzh68sg"},"release":{"environmentName":"test"}}`.
+* `trigger_desc` - (Required) TriggerDesc of the SCF function trigger, parameter format of `timer` is linux cron expression; parameter of `cos` type is json string `{"bucketUrl":"<name-appid>.cos.<region>.myqcloud.com","event":"cos:ObjectCreated:*","filter":{"Prefix":"","Suffix":""}}`, where `bucketUrl` is cos bucket (optional), `event` is the cos event trigger, `Prefix` is the corresponding file prefix filter condition, `Suffix` is the suffix filter condition, if not need filter condition can not pass; `cmq` type does not pass this parameter; `ckafka` type parameter format is json string `{"maxMsgNum":"1","offset":"latest"}`; `apigw` type parameter format is json string `{"api":{"authRequired":"FALSE","requestConfig":{"method":"ANY"},"isIntegratedResponse":"FALSE"},"service":{"serviceId":"service-dqzh68sg"},"release":{"environmentName":"test"}}`.
 * `type` - (Required) Type of the SCF function trigger, support `cos`, `cmq`, `timer`, `ckafka`, `apigw`.
 * `cos_region` - (Optional) Region of cos bucket. if `type` is `cos`, `cos_region` is required.