diff --git a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2Controller.http b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2OpenController.http
similarity index 89%
rename from yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2Controller.http
rename to yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2OpenController.http
index 691ed9e39..f1a494605 100644
--- a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2Controller.http
+++ b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2OpenController.http
@@ -42,3 +42,8 @@ grant_type=refresh_token&refresh_token=00895465d6994f72a9d926ceeed0f588
 DELETE {{baseUrl}}/system/oauth2/token?token=ca8a188f464441d6949c51493a2b7596
 Authorization: Basic ZGVmYXVsdDphZG1pbjEyMw==
 tenant-id: {{adminTenentId}}
+
+### 请求 /system/oauth2/check-token 接口 => 成功
+POST {{baseUrl}}/system/oauth2/check-token?token=620d307c5b4148df8a98dd6c6c547106
+Authorization: Basic ZGVmYXVsdDphZG1pbjEyMw==
+tenant-id: {{adminTenentId}}
diff --git a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2OpenController.java b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2OpenController.java
index 0edd0f827..6c510b47d 100644
--- a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2OpenController.java
+++ b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/OAuth2OpenController.java
@@ -10,6 +10,7 @@ import cn.iocoder.yudao.framework.common.util.http.HttpUtils;
 import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
 import cn.iocoder.yudao.framework.operatelog.core.annotations.OperateLog;
 import cn.iocoder.yudao.module.system.controller.admin.oauth2.vo.open.OAuth2OpenAccessTokenRespVO;
+import cn.iocoder.yudao.module.system.controller.admin.oauth2.vo.open.OAuth2OpenCheckTokenRespVO;
 import cn.iocoder.yudao.module.system.convert.oauth2.OAuth2OpenConvert;
 import cn.iocoder.yudao.module.system.dal.dataobject.auth.OAuth2AccessTokenDO;
 import cn.iocoder.yudao.module.system.dal.dataobject.auth.OAuth2ClientDO;
@@ -17,6 +18,7 @@ import cn.iocoder.yudao.module.system.enums.auth.OAuth2GrantTypeEnum;
 import cn.iocoder.yudao.module.system.service.oauth2.OAuth2ApproveService;
 import cn.iocoder.yudao.module.system.service.oauth2.OAuth2ClientService;
 import cn.iocoder.yudao.module.system.service.oauth2.OAuth2GrantService;
+import cn.iocoder.yudao.module.system.service.oauth2.OAuth2TokenService;
 import cn.iocoder.yudao.module.system.util.oauth2.OAuth2Utils;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiImplicitParam;
@@ -45,14 +47,14 @@ import static cn.iocoder.yudao.framework.security.core.util.SecurityFrameworkUti
 @Slf4j
 public class OAuth2OpenController {
 
-//    POST oauth/check_token CheckTokenEndpoint
-
     @Resource
     private OAuth2GrantService oauth2GrantService;
     @Resource
     private OAuth2ClientService oauth2ClientService;
     @Resource
     private OAuth2ApproveService oauth2ApproveService;
+    @Resource
+    private OAuth2TokenService oauth2TokenService;
 
     /**
      * 对应 Spring Security OAuth 的 TokenEndpoint 类的 postAccessToken 方法
@@ -130,9 +132,6 @@ public class OAuth2OpenController {
                                              @RequestParam("token") String token) {
         // 校验客户端
         String[] clientIdAndSecret = obtainBasicAuthorization(request);
-        if (ArrayUtil.isEmpty(clientIdAndSecret) || clientIdAndSecret.length != 2) {
-            throw exception0(BAD_REQUEST.getCode(), "client_id 或 client_secret 未正确传递");
-        }
         OAuth2ClientDO client = oauth2ClientService.validOAuthClientFromCache(clientIdAndSecret[0], clientIdAndSecret[1],
                 null, null, null);
 
@@ -140,6 +139,26 @@ public class OAuth2OpenController {
         return success(oauth2GrantService.revokeToken(client.getClientId(), token));
     }
 
+    /**
+     * 对应 Spring Security OAuth 的 CheckTokenEndpoint 类的 checkToken 方法
+     */
+    @PostMapping("/check-token")
+    @ApiOperation(value = "校验访问令牌")
+    @ApiImplicitParam(name = "token", required = true, value = "访问令牌", example = "biu", dataTypeClass = String.class)
+    @OperateLog(enable = false) // 避免 Post 请求被记录操作日志
+    public CommonResult<OAuth2OpenCheckTokenRespVO> checkToken(HttpServletRequest request,
+                                                               @RequestParam("token") String token) {
+        // 校验客户端
+        String[] clientIdAndSecret = obtainBasicAuthorization(request);
+        OAuth2ClientDO client = oauth2ClientService.validOAuthClientFromCache(clientIdAndSecret[0], clientIdAndSecret[1],
+                null, null, null);
+
+        // 校验令牌
+        OAuth2AccessTokenDO accessTokenDO = oauth2TokenService.checkAccessToken(token);
+        Assert.notNull(accessTokenDO, "访问令牌不能为空"); // 防御性检查
+        return success(OAuth2OpenConvert.INSTANCE.convert2(accessTokenDO));
+    }
+
     //    GET  oauth/authorize AuthorizationEndpoint TODO
     @GetMapping("/authorize")
     @ApiOperation(value = "获得授权信息", notes = "适合 code 授权码模式，或者 implicit 简化模式；在 authorize.vue 单点登录界面被【获取】调用")
diff --git a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/vo/open/OAuth2OpenAccessTokenRespVO.java b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/vo/open/OAuth2OpenAccessTokenRespVO.java
index cf9848ad3..4fdb4e539 100644
--- a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/vo/open/OAuth2OpenAccessTokenRespVO.java
+++ b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/vo/open/OAuth2OpenAccessTokenRespVO.java
@@ -7,7 +7,7 @@ import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
-@ApiModel("管理后台 - 访问令牌 Response VO")
+@ApiModel("管理后台 - 【开放接口】访问令牌 Response VO")
 @Data
 @NoArgsConstructor
 @AllArgsConstructor
diff --git a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/vo/open/OAuth2OpenCheckTokenRespVO.java b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/vo/open/OAuth2OpenCheckTokenRespVO.java
new file mode 100644
index 000000000..b905e302b
--- /dev/null
+++ b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/oauth2/vo/open/OAuth2OpenCheckTokenRespVO.java
@@ -0,0 +1,40 @@
+package cn.iocoder.yudao.module.system.controller.admin.oauth2.vo.open;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.Set;
+
+@ApiModel("管理后台 - 【开放接口】校验令牌 Response VO")
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class OAuth2OpenCheckTokenRespVO {
+
+    @ApiModelProperty(value = "用户编号", required = true, example = "666")
+    @JsonProperty("user_id")
+    private Long userId;
+    @ApiModelProperty(value = "用户类型", required = true, example = "2", notes = "参见 UserTypeEnum 枚举")
+    @JsonProperty("user_type")
+    private Integer userType;
+    @ApiModelProperty(value = "租户编号", required = true, example = "1024")
+    @JsonProperty("tenant_id")
+    private Long tenantId;
+
+    @ApiModelProperty(value = "客户端编号", required = true, example = "car")
+    private String clientId;
+    @ApiModelProperty(value = "授权范围", required = true, example = "user_info")
+    private Set<String> scopes;
+
+    @ApiModelProperty(value = "访问令牌", required = true, example = "tudou")
+    @JsonProperty("access_token")
+    private String accessToken;
+
+    @ApiModelProperty(value = "过期时间", required = true, example = "1593092157", notes = "时间戳 / 1000，即单位：秒")
+    @JsonProperty("exp")
+    private Long exp;
+}
diff --git a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/convert/oauth2/OAuth2OpenConvert.java b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/convert/oauth2/OAuth2OpenConvert.java
index 61fbee152..cf0017d9e 100644
--- a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/convert/oauth2/OAuth2OpenConvert.java
+++ b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/convert/oauth2/OAuth2OpenConvert.java
@@ -1,7 +1,9 @@
 package cn.iocoder.yudao.module.system.convert.oauth2;
 
+import cn.iocoder.yudao.framework.common.enums.UserTypeEnum;
 import cn.iocoder.yudao.framework.security.core.util.SecurityFrameworkUtils;
 import cn.iocoder.yudao.module.system.controller.admin.oauth2.vo.open.OAuth2OpenAccessTokenRespVO;
+import cn.iocoder.yudao.module.system.controller.admin.oauth2.vo.open.OAuth2OpenCheckTokenRespVO;
 import cn.iocoder.yudao.module.system.dal.dataobject.auth.OAuth2AccessTokenDO;
 import cn.iocoder.yudao.module.system.util.oauth2.OAuth2Utils;
 import org.mapstruct.Mapper;
@@ -19,7 +21,14 @@ public interface OAuth2OpenConvert {
         respVO.setScope(OAuth2Utils.buildScopeStr(bean.getScopes()));
         return respVO;
     }
-
     OAuth2OpenAccessTokenRespVO convert0(OAuth2AccessTokenDO bean);
 
+    default OAuth2OpenCheckTokenRespVO convert2(OAuth2AccessTokenDO bean) {
+        OAuth2OpenCheckTokenRespVO respVO = convert3(bean);
+        respVO.setExp(bean.getExpiresTime().getTime() / 1000L);
+        respVO.setUserType(UserTypeEnum.ADMIN.getValue());
+        return respVO;
+    }
+    OAuth2OpenCheckTokenRespVO convert3(OAuth2AccessTokenDO bean);
+
 }
diff --git a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/framework/security/config/SecurityConfiguration.java b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/framework/security/config/SecurityConfiguration.java
index b43af78e0..c81809b2e 100644
--- a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/framework/security/config/SecurityConfiguration.java
+++ b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/framework/security/config/SecurityConfiguration.java
@@ -37,7 +37,7 @@ public class SecurityConfiguration {
                 registry.antMatchers(buildAdminApi("/system/sms/callback/**")).permitAll();
                 // OAuth2 API
                 registry.antMatchers(buildAdminApi("/system/oauth2/token")).permitAll();
-                registry.antMatchers(buildAdminApi("/system/oauth2/check_token")).permitAll();
+                registry.antMatchers(buildAdminApi("/system/oauth2/check-token")).permitAll();
             }
 
         };