diff --git a/packages/core/client/src/application/Application.tsx b/packages/core/client/src/application/Application.tsx
index 471ec52164..27cf7d959e 100644
--- a/packages/core/client/src/application/Application.tsx
+++ b/packages/core/client/src/application/Application.tsx
@@ -167,6 +167,15 @@ export class Application {
     return this.options.publicPath || '/';
   }
 
+  getApiUrl(pathname = '') {
+    let baseURL = this.apiClient.axios['defaults']['baseURL'];
+    if (!baseURL.startsWith('http://') || !baseURL.startsWith('https://')) {
+      const { protocol, host } = window.location;
+      baseURL = `${protocol}//${host}/`;
+    }
+    return baseURL + pathname;
+  }
+
   getRouteUrl(pathname: string) {
     return this.options.publicPath.replace(/\/$/g, '') + pathname;
   }
diff --git a/packages/core/client/src/application/WebSocketClient.ts b/packages/core/client/src/application/WebSocketClient.ts
index cdadcd6fd3..448dab29d6 100644
--- a/packages/core/client/src/application/WebSocketClient.ts
+++ b/packages/core/client/src/application/WebSocketClient.ts
@@ -41,8 +41,7 @@ export class WebSocketClient {
     if (!this.app) {
       return;
     }
-    const options = this.app.getOptions();
-    const apiBaseURL = options?.apiClient?.['baseURL'];
+    const apiBaseURL = this.app.getApiUrl();
     if (!apiBaseURL) {
       return;
     }
diff --git a/packages/plugins/@nocobase/plugin-iframe-block/src/client/Iframe.tsx b/packages/plugins/@nocobase/plugin-iframe-block/src/client/Iframe.tsx
index 36bcb257d7..955a13bb83 100644
--- a/packages/plugins/@nocobase/plugin-iframe-block/src/client/Iframe.tsx
+++ b/packages/plugins/@nocobase/plugin-iframe-block/src/client/Iframe.tsx
@@ -26,9 +26,7 @@ export const Iframe: any = observer(
 
     const src = React.useMemo(() => {
       if (mode === 'html') {
-        const options = app.getOptions();
-        const apiBaseURL: string = options?.apiClient?.['baseURL'];
-        return `${apiBaseURL}iframeHtml:getHtml/${htmlId}?token=${api.auth.getToken()}&v=${field.data?.v || ''}`;
+        return app.getApiUrl(`iframeHtml:getHtml/${htmlId}?token=${api.auth.getToken()}&v=${field.data?.v || ''}`);
       }
       return url;
     }, [app, url, mode, htmlId, field.data?.v]);
diff --git a/packages/plugins/@nocobase/plugin-oidc/src/client/Options.tsx b/packages/plugins/@nocobase/plugin-oidc/src/client/Options.tsx
index 9dc2325d25..ca886f0fce 100644
--- a/packages/plugins/@nocobase/plugin-oidc/src/client/Options.tsx
+++ b/packages/plugins/@nocobase/plugin-oidc/src/client/Options.tsx
@@ -330,12 +330,7 @@ const Usage = observer(
     const app = useApp();
 
     const url = useMemo(() => {
-      const options = app.getOptions();
-      const apiBaseURL: string = options?.apiClient?.['baseURL'];
-      const { protocol, host } = window.location;
-      return apiBaseURL.startsWith('http')
-        ? `${apiBaseURL}oidc:redirect`
-        : `${protocol}//${host}${apiBaseURL}oidc:redirect`;
+      return app.getApiUrl('oidc:redirect');
     }, [app]);
 
     const copy = (text: string) => {
diff --git a/packages/plugins/@nocobase/plugin-saml/src/client/Options.tsx b/packages/plugins/@nocobase/plugin-saml/src/client/Options.tsx
index 061a69daf2..62a75786fa 100644
--- a/packages/plugins/@nocobase/plugin-saml/src/client/Options.tsx
+++ b/packages/plugins/@nocobase/plugin-saml/src/client/Options.tsx
@@ -77,14 +77,8 @@ const Usage = observer(
     const name = form.values.name ?? record.name;
 
     const url = useMemo(() => {
-      const options = app.getOptions();
-      const apiBaseURL: string = options?.apiClient?.['baseURL'];
-      const { protocol, host } = window.location;
       const appName = getSubAppName(app.getPublicPath()) || 'main';
-
-      return apiBaseURL.startsWith('http')
-        ? `${apiBaseURL}saml:redirect?authenticator=${name}&__appName=${appName}`
-        : `${protocol}//${host}${apiBaseURL}saml:redirect?authenticator=${name}&__appName=${appName}`;
+      return app.getApiUrl(`saml:redirect?authenticator=${name}&__appName=${appName}`);
     }, [app, name]);
 
     const copy = (text: string) => {