diff --git a/pp/provider.go b/pp/provider.go
index 174bc9fe..a7f27794 100644
--- a/pp/provider.go
+++ b/pp/provider.go
@@ -33,7 +33,7 @@ func GetPaymentProvider(typ string, appId string, clientSecret string, host stri
 		return NewGcPaymentProvider(appId, clientSecret, host), nil
 	} else if typ == "WeChat Pay" {
 		// appId, mchId, mchCertSerialNumber, apiV3Key, privateKey
-		newWechatPaymentProvider, err := NewWechatPaymentProvider(clientId2, appId, authorityPublicKey, clientSecret, appPrivateKey)
+		newWechatPaymentProvider, err := NewWechatPaymentProvider(clientId2, appId, appCertificate, clientSecret, appPrivateKey)
 		if err != nil {
 			return nil, err
 		}
diff --git a/web/src/ProviderEditPage.js b/web/src/ProviderEditPage.js
index e0e1a1fd..d764c534 100644
--- a/web/src/ProviderEditPage.js
+++ b/web/src/ProviderEditPage.js
@@ -821,6 +821,20 @@ class ProviderEditPage extends React.Component {
             </React.Fragment>
           ) : null
         }
+        {
+          this.state.provider.type === "WeChat Pay" ? (
+            <Row style={{marginTop: "20px"}} >
+              <Col style={{marginTop: "5px"}} span={(Setting.isMobile()) ? 22 : 2}>
+                {Setting.getLabel("cert", "cert")} :
+              </Col>
+              <Col span={22} >
+                <Input value={this.state.provider.cert} onChange={e => {
+                  this.updateProviderField("cert", e.target.value);
+                }} />
+              </Col>
+            </Row>
+          ) : null
+        }
         {this.getAppIdRow(this.state.provider)}
         <Row style={{marginTop: "20px"}} >
           <Col style={{marginTop: "5px"}} span={(Setting.isMobile()) ? 22 : 2}>