diff --git a/pkg/core/ssl-applicator/acme-dns01/providers/ucloud-udnr/internal/lego.go b/pkg/core/ssl-applicator/acme-dns01/providers/ucloud-udnr/internal/lego.go
index 319d2ac0c..9dd1b5722 100644
--- a/pkg/core/ssl-applicator/acme-dns01/providers/ucloud-udnr/internal/lego.go
+++ b/pkg/core/ssl-applicator/acme-dns01/providers/ucloud-udnr/internal/lego.go
@@ -94,10 +94,7 @@ func (d *DNSProvider) Present(domain, token, keyAuth string) error {
 		return fmt.Errorf("ucloud-udnr: could not find zone for domain %q: %w", domain, err)
 	}
 
-	subDomain, err := dns01.ExtractSubDomain(info.EffectiveFQDN, authZone)
-	if err != nil {
-		return fmt.Errorf("ucloud-udnr: %w", err)
-	}
+	recordName := dns01.UnFqdn(info.EffectiveFQDN)
 
 	udnrDomainDNSQueryReq := d.client.NewQueryDomainDNSRequest()
 	udnrDomainDNSQueryReq.Dn = ucloud.String(authZone)
@@ -108,7 +105,7 @@ func (d *DNSProvider) Present(domain, token, keyAuth string) error {
 		return fmt.Errorf("ucloud-udnr: %w", err)
 	} else {
 		for _, record := range udnrDomainDNSQueryResp.Data {
-			if record.DnsType == "TXT" && record.RecordName == subDomain {
+			if record.DnsType == "TXT" && record.RecordName == recordName {
 				udnrDomainDNSDeleteReq := d.client.NewDeleteDomainDNSRequest()
 				udnrDomainDNSDeleteReq.Dn = ucloud.String(authZone)
 				udnrDomainDNSDeleteReq.DnsType = ucloud.String(record.DnsType)
@@ -126,9 +123,9 @@ func (d *DNSProvider) Present(domain, token, keyAuth string) error {
 	udnrDomainDNSAddReq := d.client.NewAddDomainDNSRequest()
 	udnrDomainDNSAddReq.Dn = ucloud.String(authZone)
 	udnrDomainDNSAddReq.DnsType = ucloud.String("TXT")
-	udnrDomainDNSAddReq.RecordName = ucloud.String(subDomain)
+	udnrDomainDNSAddReq.RecordName = ucloud.String(recordName)
 	udnrDomainDNSAddReq.Content = ucloud.String(info.Value)
-	udnrDomainDNSAddReq.TTL = ucloud.Int(int(d.config.TTL))
+	udnrDomainDNSAddReq.TTL = ucloud.String(fmt.Sprintf("%d", d.config.TTL))
 	if d.config.ProjectId != "" {
 		udnrDomainDNSAddReq.SetProjectId(d.config.ProjectId)
 	}
@@ -147,10 +144,7 @@ func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
 		return fmt.Errorf("ucloud-udnr: could not find zone for domain %q: %w", domain, err)
 	}
 
-	subDomain, err := dns01.ExtractSubDomain(info.EffectiveFQDN, authZone)
-	if err != nil {
-		return fmt.Errorf("ucloud-udnr: %w", err)
-	}
+	recordName := dns01.UnFqdn(info.EffectiveFQDN)
 
 	udnrDomainDNSQueryReq := d.client.NewQueryDomainDNSRequest()
 	udnrDomainDNSQueryReq.Dn = ucloud.String(authZone)
@@ -161,7 +155,7 @@ func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
 		return fmt.Errorf("ucloud-udnr: %w", err)
 	} else {
 		for _, record := range udnrDomainDNSQueryResp.Data {
-			if record.DnsType == "TXT" && record.RecordName == subDomain {
+			if record.DnsType == "TXT" && record.RecordName == recordName {
 				udnrDomainDNSDeleteReq := d.client.NewDeleteDomainDNSRequest()
 				udnrDomainDNSDeleteReq.Dn = ucloud.String(authZone)
 				udnrDomainDNSDeleteReq.DnsType = ucloud.String(record.DnsType)
diff --git a/pkg/sdk3rd/ucloud/udnr/api_add_domain_dns.go b/pkg/sdk3rd/ucloud/udnr/api_add_domain_dns.go
index d0cfe4c59..dae8033a0 100644
--- a/pkg/sdk3rd/ucloud/udnr/api_add_domain_dns.go
+++ b/pkg/sdk3rd/ucloud/udnr/api_add_domain_dns.go
@@ -12,8 +12,8 @@ type AddDomainDNSRequest struct {
 	DnsType    *string `required:"true"`
 	RecordName *string `required:"true"`
 	Content    *string `required:"true"`
-	TTL        *int    `required:"true"`
-	Prio       *int    `required:"false"`
+	TTL        *string `required:"true"`
+	Prio       *string `required:"false"`
 }
 
 type AddDomainDNSResponse struct {
diff --git a/pkg/sdk3rd/ucloud/udnr/types.go b/pkg/sdk3rd/ucloud/udnr/types.go
index 4d2081f5d..52fd5b164 100644
--- a/pkg/sdk3rd/ucloud/udnr/types.go
+++ b/pkg/sdk3rd/ucloud/udnr/types.go
@@ -4,6 +4,6 @@ type DomainDNSRecord struct {
 	DnsType    string
 	RecordName string
 	Content    string
-	TTL        int
-	Prio       int
+	TTL        string
+	Prio       string
 }