diff --git a/alicloud/resource_cms_composite_group_metric_rule.go b/alicloud/resource_cms_composite_group_metric_rule.go
index a5d65b7..b0a137e 100644
--- a/alicloud/resource_cms_composite_group_metric_rule.go
+++ b/alicloud/resource_cms_composite_group_metric_rule.go
@@ -184,18 +184,23 @@ func (r *cmsAlarmRuleResource) Read(ctx context.Context, req resource.ReadReques
 
 		totalRules, _ := strconv.ParseInt(*alarmRuleResponse.Body.Total, 10, 64)
 
-		if totalRules > 0 {
+		if totalRules > 0 &&
+			alarmRuleResponse.Body.Alarms.Alarm[0].CompositeExpression.ExpressionRaw != nil &&
+			alarmRuleResponse.Body.Alarms.Alarm[0].CompositeExpression.Level != nil &&
+			alarmRuleResponse.Body.Alarms.Alarm[0].CompositeExpression.Times != nil {
+
+			alarm := alarmRuleResponse.Body.Alarms.Alarm[0]
 			groupId, _ := strconv.ParseInt(*alarmRuleResponse.Body.Alarms.Alarm[0].GroupId, 10, 64)
 
-			state.RuleName = types.StringValue(*alarmRuleResponse.Body.Alarms.Alarm[0].RuleName)
-			state.Namespace = types.StringValue(*alarmRuleResponse.Body.Alarms.Alarm[0].Namespace)
-			state.MetricName = types.StringValue(*alarmRuleResponse.Body.Alarms.Alarm[0].MetricName)
-			state.ContactGroups = types.StringValue(*alarmRuleResponse.Body.Alarms.Alarm[0].ContactGroups)
+			state.RuleName = types.StringValue(*alarm.RuleName)
+			state.Namespace = types.StringValue(*alarm.Namespace)
+			state.MetricName = types.StringValue(*alarm.MetricName)
+			state.ContactGroups = types.StringValue(*alarm.ContactGroups)
 			state.GroupId = types.Int64Value(groupId)
 
-			state.CompositeExpression.ExpressionRaw = types.StringValue(*alarmRuleResponse.Body.Alarms.Alarm[0].CompositeExpression.ExpressionRaw)
-			state.CompositeExpression.Level = types.StringValue(*alarmRuleResponse.Body.Alarms.Alarm[0].CompositeExpression.Level)
-			state.CompositeExpression.Times = types.Int64Value(int64(*alarmRuleResponse.Body.Alarms.Alarm[0].CompositeExpression.Times))
+			state.CompositeExpression.ExpressionRaw = types.StringValue(*alarm.CompositeExpression.ExpressionRaw)
+			state.CompositeExpression.Level = types.StringValue(*alarm.CompositeExpression.Level)
+			state.CompositeExpression.Times = types.Int64Value(int64(*alarm.CompositeExpression.Times))
 
 			// Set refreshed state
 			setStateDiags := resp.State.Set(ctx, &state)
@@ -343,6 +348,19 @@ func (r *cmsAlarmRuleResource) setRule(ctx context.Context, plan *cmsAlarmRuleRe
 			},
 		}
 
+		_, _err := r.client.CreateGroupMetricRulesWithOptions(createGroupMetricRulesRequest, runtime)
+		if _err != nil {
+			if _t, ok := _err.(*tea.SDKError); ok {
+				if isAbleToRetry(*_t.Code) {
+					return _err
+				} else {
+					return backoff.Permanent(_err)
+				}
+			} else {
+				return _err
+			}
+		}
+
 		putResourceMetricRuleRequest := &alicloudCmsClient.PutResourceMetricRuleRequest{
 			RuleId:        tea.String(ruleId),
 			RuleName:      tea.String(plan.RuleName.ValueString()),
@@ -357,19 +375,6 @@ func (r *cmsAlarmRuleResource) setRule(ctx context.Context, plan *cmsAlarmRuleRe
 			},
 		}
 
-		_, _err := r.client.CreateGroupMetricRulesWithOptions(createGroupMetricRulesRequest, runtime)
-		if _err != nil {
-			if _t, ok := _err.(*tea.SDKError); ok {
-				if isAbleToRetry(*_t.Code) {
-					return _err
-				} else {
-					return backoff.Permanent(_err)
-				}
-			} else {
-				return _err
-			}
-		}
-
 		_, err := r.client.PutResourceMetricRuleWithOptions(putResourceMetricRuleRequest, runtime)
 		if err != nil {
 			if _t, ok := err.(*tea.SDKError); ok {