diff --git a/README-en.md b/README-en.md
index aff539e..9ab7090 100644
--- a/README-en.md
+++ b/README-en.md
@@ -131,6 +131,7 @@ record_cert_info{
 
 ## Supported DNS service providers
 
+- [x] Custom Records
 - [x] Tencent DnsPod
 - [x] Aliyun Dns
 - [x] Godaddy
diff --git a/README.md b/README.md
index 5e4f546..07d744b 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,7 @@ record_cert_info{
 
 ## 已支持 DNS 服务商
 
+- [x] Custom Records
 - [x] Tencent DnsPod
 - [x] Aliyun Dns
 - [x] Godaddy
diff --git a/pkg/export/export_gauge.go b/pkg/export/export_gauge.go
index 93a627b..f41cd47 100644
--- a/pkg/export/export_gauge.go
+++ b/pkg/export/export_gauge.go
@@ -161,17 +161,21 @@ func (c *Metrics) Collect(ch chan<- prometheus.Metric) {
 	}
 
 	// get custom record cert info list from cache
-	recordCertInfoCacheKey := public.RecordCertInfo + "_" + public.CustomRecords
-	var recordCerts []provider.RecordCert
-	recordCertInfoCacheValue, err := public.CertCache.Get(recordCertInfoCacheKey)
-	if err != nil {
-		logger.Error(fmt.Sprintf("[ %s ] get record list failed: %v", recordCertInfoCacheKey, err))
-	}
-	err = json.Unmarshal(recordCertInfoCacheValue, &recordCerts)
-	if err != nil {
-		logger.Error(fmt.Sprintf("[ %s ] json.Unmarshal error: %v", recordCertInfoCacheKey, err))
-	}
-	for _, v := range recordCerts {
-		ch <- prometheus.MustNewConstMetric(c.metrics[public.RecordCertInfo], prometheus.GaugeValue, float64(v.DaysUntilExpiry), v.CloudProvider, v.CloudName, v.DomainName, v.RecordID, v.FullRecord, v.SubjectCommonName, v.SubjectOrganization, v.SubjectOrganizationalUnit, v.IssuerCommonName, v.IssuerOrganization, v.IssuerOrganizationalUnit, v.CreatedDate, v.ExpiryDate, fmt.Sprintf("%t", v.CertMatched), v.ErrorMsg)
+	if len(public.Config.CustomRecords) != 0 {
+		recordCertInfoCacheKey := public.RecordCertInfo + "_" + public.CustomRecords
+		var recordCerts []provider.RecordCert
+		recordCertInfoCacheValue, err := public.CertCache.Get(recordCertInfoCacheKey)
+		if err != nil {
+			logger.Error(fmt.Sprintf("[ %s ] get record list failed: %v", recordCertInfoCacheKey, err))
+			return
+		}
+		err = json.Unmarshal(recordCertInfoCacheValue, &recordCerts)
+		if err != nil {
+			logger.Error(fmt.Sprintf("[ %s ] json.Unmarshal error: %v", recordCertInfoCacheKey, err))
+			return
+		}
+		for _, v := range recordCerts {
+			ch <- prometheus.MustNewConstMetric(c.metrics[public.RecordCertInfo], prometheus.GaugeValue, float64(v.DaysUntilExpiry), v.CloudProvider, v.CloudName, v.DomainName, v.RecordID, v.FullRecord, v.SubjectCommonName, v.SubjectOrganization, v.SubjectOrganizationalUnit, v.IssuerCommonName, v.IssuerOrganization, v.IssuerOrganizationalUnit, v.CreatedDate, v.ExpiryDate, fmt.Sprintf("%t", v.CertMatched), v.ErrorMsg)
+		}
 	}
 }