diff --git a/server/skillhub-app/src/main/java/com/iflytek/skillhub/service/AuthMethodCatalog.java b/server/skillhub-app/src/main/java/com/iflytek/skillhub/service/AuthMethodCatalog.java
index 84324f18..8c63cb9d 100644
--- a/server/skillhub-app/src/main/java/com/iflytek/skillhub/service/AuthMethodCatalog.java
+++ b/server/skillhub-app/src/main/java/com/iflytek/skillhub/service/AuthMethodCatalog.java
@@ -12,6 +12,7 @@ import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
+import java.util.Locale;
 import org.springframework.boot.autoconfigure.security.oauth2.client.OAuth2ClientProperties;
 import org.springframework.stereotype.Service;
 
@@ -43,6 +44,7 @@ public class AuthMethodCatalog {
     public List<AuthProviderResponse> listOAuthProviders(String returnTo) {
         String sanitizedReturnTo = OAuthLoginRedirectSupport.sanitizeReturnTo(returnTo);
         return new ArrayList<>(oAuth2ClientProperties.getRegistration().entrySet().stream()
+            .filter(entry -> isValidOAuthProvider(entry.getValue()))
             .sorted(Comparator.comparing(entry -> entry.getKey()))
             .map(entry -> new AuthProviderResponse(
                 entry.getKey(),
@@ -54,6 +56,17 @@ public class AuthMethodCatalog {
             .toList());
     }
 
+    /**
+     * Checks whether an OAuth provider has a non-empty, non-placeholder client ID.
+     */
+    private boolean isValidOAuthProvider(OAuth2ClientProperties.Registration registration) {
+        String clientId = registration.getClientId();
+        if (clientId == null || clientId.isBlank()) {
+            return false;
+        }
+        return !clientId.toLowerCase(Locale.ROOT).contains("placeholder");
+    }
+
     public List<AuthMethodResponse> listMethods(String returnTo) {
         String sanitizedReturnTo = OAuthLoginRedirectSupport.sanitizeReturnTo(returnTo);
         List<AuthMethodResponse> methods = new ArrayList<>();
@@ -67,6 +80,7 @@ public class AuthMethodCatalog {
         ));
 
         oAuth2ClientProperties.getRegistration().entrySet().stream()
+            .filter(entry -> isValidOAuthProvider(entry.getValue()))
             .sorted(Comparator.comparing(entry -> entry.getKey()))
             .forEach(entry -> methods.add(new AuthMethodResponse(
                 "oauth-" + entry.getKey(),
diff --git a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/AuthControllerTest.java b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/AuthControllerTest.java
index d79d368a..8e4118c6 100644
--- a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/AuthControllerTest.java
+++ b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/AuthControllerTest.java
@@ -150,13 +150,9 @@ class AuthControllerTest {
         mockMvc.perform(get("/api/v1/auth/providers"))
             .andExpect(status().isOk())
             .andExpect(jsonPath("$.code").value(0))
-            .andExpect(jsonPath("$.data.length()").value(3))
-            .andExpect(jsonPath("$.data[*].id", hasItems("github", "gitee", "gitlab")))
-            .andExpect(jsonPath("$.data[*].authorizationUrl", hasItems(
-                "/oauth2/authorization/github",
-                "/oauth2/authorization/gitee",
-                "/oauth2/authorization/gitlab"
-            )))
+            .andExpect(jsonPath("$.data.length()").value(1))
+            .andExpect(jsonPath("$.data[*].id", hasItems("github")))
+            .andExpect(jsonPath("$.data[*].authorizationUrl", hasItems("/oauth2/authorization/github")))
             .andExpect(jsonPath("$.timestamp").isNotEmpty())
             .andExpect(jsonPath("$.requestId").isNotEmpty());
     }
@@ -167,8 +163,7 @@ class AuthControllerTest {
             .andExpect(status().isOk())
             .andExpect(jsonPath("$.code").value(0))
             .andExpect(jsonPath("$.data[*].authorizationUrl", hasItems(
-                "/oauth2/authorization/github?returnTo=%2Fdashboard%2Fpublish",
-                "/oauth2/authorization/gitee?returnTo=%2Fdashboard%2Fpublish"
+                "/oauth2/authorization/github?returnTo=%2Fdashboard%2Fpublish"
             )));
     }
 
@@ -177,7 +172,8 @@ class AuthControllerTest {
         mockMvc.perform(get("/api/v1/auth/methods").param("returnTo", "/dashboard/publish"))
             .andExpect(status().isOk())
             .andExpect(jsonPath("$.code").value(0))
-            .andExpect(jsonPath("$.data[*].id", hasItems("local-password", "oauth-github", "oauth-gitee")))
+            .andExpect(jsonPath("$.data.length()").value(2))
+            .andExpect(jsonPath("$.data[*].id", hasItems("local-password", "oauth-github")))
             .andExpect(jsonPath("$.data[?(@.id=='local-password')].methodType").value(hasItems("PASSWORD")))
             .andExpect(jsonPath("$.data[?(@.id=='oauth-github')].actionUrl")
                 .value(hasItems("/oauth2/authorization/github?returnTo=%2Fdashboard%2Fpublish")));
diff --git a/server/skillhub-app/src/test/java/com/iflytek/skillhub/service/AuthMethodCatalogTest.java b/server/skillhub-app/src/test/java/com/iflytek/skillhub/service/AuthMethodCatalogTest.java
index 35ca8d75..e9ef372f 100644
--- a/server/skillhub-app/src/test/java/com/iflytek/skillhub/service/AuthMethodCatalogTest.java
+++ b/server/skillhub-app/src/test/java/com/iflytek/skillhub/service/AuthMethodCatalogTest.java
@@ -16,6 +16,31 @@ import org.springframework.boot.autoconfigure.security.oauth2.client.OAuth2Clien
 
 class AuthMethodCatalogTest {
 
+    @Test
+    void catalogsShouldHideEmptyAndPlaceholderOAuthProviders() {
+        OAuth2ClientProperties oauthProperties = new OAuth2ClientProperties();
+        oauthProperties.getRegistration().put("valid", registration("production-client", "Valid"));
+        oauthProperties.getRegistration().put("missing", registration(null, "Missing"));
+        oauthProperties.getRegistration().put("blank", registration("  ", "Blank"));
+        oauthProperties.getRegistration().put("placeholder", registration("PLACEHOLDER", "Placeholder"));
+        oauthProperties.getRegistration().put("local", registration("local-placeholder", "Local"));
+
+        AuthMethodCatalog catalog = new AuthMethodCatalog(
+            oauthProperties,
+            new DirectAuthProperties(),
+            new AuthSessionBootstrapProperties(),
+            List.of(),
+            List.of()
+        );
+
+        assertThat(catalog.listOAuthProviders(null))
+            .extracting(provider -> provider.id())
+            .containsExactly("valid");
+        assertThat(catalog.listMethods(null))
+            .extracting(method -> method.id())
+            .containsExactly("local-password", "oauth-valid");
+    }
+
     @Test
     void listMethodsShouldUseProviderDisplayNamesForCompatibleAuthMethods() {
         OAuth2ClientProperties oauthProperties = new OAuth2ClientProperties();
@@ -122,4 +147,11 @@ class AuthMethodCatalogTest {
                 "bootstrap-private-sso:private-sso"
             );
     }
+
+    private static OAuth2ClientProperties.Registration registration(String clientId, String clientName) {
+        OAuth2ClientProperties.Registration registration = new OAuth2ClientProperties.Registration();
+        registration.setClientId(clientId);
+        registration.setClientName(clientName);
+        return registration;
+    }
 }