diff --git a/vetti-admin/src/main/resources/i18n/messages_en_US.properties b/vetti-admin/src/main/resources/i18n/messages_en_US.properties
index 7035452..f49a7cc 100644
--- a/vetti-admin/src/main/resources/i18n/messages_en_US.properties
+++ b/vetti-admin/src/main/resources/i18n/messages_en_US.properties
@@ -63,3 +63,6 @@ HotakeRolesInfoServiceImpl10001 = The job information is abnormal. Please try ag
 # manager.页面,字段 = User Manager
 VerificationEmailTiTle = Your verification code
 VerificationEmailContent = Your verification code is: {0}, valid for {1} minutes.
+
+
+HotakeRolesApplyInfoServiceImpl10001 = You have already applied for this position
\ No newline at end of file
diff --git a/vetti-admin/src/main/resources/i18n/messages_zh_CN.properties b/vetti-admin/src/main/resources/i18n/messages_zh_CN.properties
index 69451eb..90b799f 100644
--- a/vetti-admin/src/main/resources/i18n/messages_zh_CN.properties
+++ b/vetti-admin/src/main/resources/i18n/messages_zh_CN.properties
@@ -62,3 +62,4 @@ HotakeRolesInfoServiceImpl10001 = 岗位信息异常,请稍后再试
 VerificationEmailTiTle = 你的验证码
 VerificationEmailContent = 你的验证码是: {0}，有效期为 {1} 分钟。
 
+HotakeRolesApplyInfoServiceImpl10001 = 您已申请该职位
\ No newline at end of file
diff --git a/vetti-hotakes/src/main/java/com/vetti/hotake/domain/dto/HotakeRolesInfoDto.java b/vetti-hotakes/src/main/java/com/vetti/hotake/domain/dto/HotakeRolesInfoDto.java
index 844e5c1..1c4a18a 100644
--- a/vetti-hotakes/src/main/java/com/vetti/hotake/domain/dto/HotakeRolesInfoDto.java
+++ b/vetti-hotakes/src/main/java/com/vetti/hotake/domain/dto/HotakeRolesInfoDto.java
@@ -48,4 +48,7 @@ public class HotakeRolesInfoDto extends HotakeRolesInfo {
     @ApiModelProperty("招聘人详细信息")
     private SysUser recruiterUser;
 
+    @ApiModelProperty("当前用户是否已申请该岗位")
+    private Boolean hasApplied;
+
 }
diff --git a/vetti-hotakes/src/main/java/com/vetti/hotake/mapper/HotakeRolesApplyInfoMapper.java b/vetti-hotakes/src/main/java/com/vetti/hotake/mapper/HotakeRolesApplyInfoMapper.java
index 1047b91..b039813 100644
--- a/vetti-hotakes/src/main/java/com/vetti/hotake/mapper/HotakeRolesApplyInfoMapper.java
+++ b/vetti-hotakes/src/main/java/com/vetti/hotake/mapper/HotakeRolesApplyInfoMapper.java
@@ -2,6 +2,7 @@ package com.vetti.hotake.mapper;
 
 import java.util.List;
 import com.vetti.hotake.domain.HotakeRolesApplyInfo;
+import org.apache.ibatis.annotations.Param;
 
 /**
  * 候选人岗位申请信息Mapper接口
@@ -82,4 +83,13 @@ public interface HotakeRolesApplyInfoMapper
      */
     public int batchInsertHotakeRolesApplyInfo(List<HotakeRolesApplyInfo> hotakeRolesApplyInfoList);
 
+    /**
+     * 根据候选人ID和岗位ID查询申请信息
+     *
+     * @param candidateId 候选人ID
+     * @param roleId 岗位ID
+     * @return 候选人岗位申请信息
+     */
+    public HotakeRolesApplyInfo selectByCandidateIdAndRoleId(@Param("candidateId") Long candidateId, @Param("roleId") Long roleId);
+
 }
diff --git a/vetti-hotakes/src/main/java/com/vetti/hotake/service/impl/HotakeRolesApplyInfoServiceImpl.java b/vetti-hotakes/src/main/java/com/vetti/hotake/service/impl/HotakeRolesApplyInfoServiceImpl.java
index f15fa88..997d0ac 100644
--- a/vetti-hotakes/src/main/java/com/vetti/hotake/service/impl/HotakeRolesApplyInfoServiceImpl.java
+++ b/vetti-hotakes/src/main/java/com/vetti/hotake/service/impl/HotakeRolesApplyInfoServiceImpl.java
@@ -9,6 +9,7 @@ import com.vetti.common.core.service.BaseServiceImpl;
 import com.vetti.common.enums.FillTypeEnum;
 import com.vetti.common.enums.StageEnum;
 import com.vetti.common.exception.ServiceException;
+import com.vetti.common.utils.MessageUtils;
 import com.vetti.common.utils.SecurityUtils;
 import com.vetti.hotake.domain.*;
 import com.vetti.hotake.domain.dto.HotakeAiCvScoringRankingDto;
@@ -172,7 +173,17 @@ public class HotakeRolesApplyInfoServiceImpl extends BaseServiceImpl implements
     public HotakeRolesApplyInfo insertHotakeRolesApplyInfo(HotakeRolesApplyInfo hotakeRolesApplyInfo)
     {
         fill(FillTypeEnum.INSERT.getCode(), hotakeRolesApplyInfo);
-        hotakeRolesApplyInfo.setCandidateId(SecurityUtils.getUserId());
+        Long candidateId = SecurityUtils.getUserId();
+        hotakeRolesApplyInfo.setCandidateId(candidateId);
+        
+        // 校验候选人和岗位的唯一性
+        if (hotakeRolesApplyInfo.getRoleId() != null) {
+            HotakeRolesApplyInfo existInfo = hotakeRolesApplyInfoMapper.selectByCandidateIdAndRoleId(candidateId, hotakeRolesApplyInfo.getRoleId());
+            if (existInfo != null) {
+                throw new ServiceException(MessageUtils.messageCustomize("HotakeRolesApplyInfoServiceImpl10001"));
+            }
+        }
+        
         String fileSuffix = FileUtil.getSuffix(hotakeRolesApplyInfo.getCvFile());
         if (StrUtil.isNotEmpty(fileSuffix)) {
             fileSuffix = fileSuffix.toLowerCase();
@@ -193,7 +204,17 @@ public class HotakeRolesApplyInfoServiceImpl extends BaseServiceImpl implements
     public HotakeRolesApplyInfo updateHotakeRolesApplyInfo(HotakeRolesApplyInfo hotakeRolesApplyInfo)
     {
         fill(FillTypeEnum.UPDATE.getCode(), hotakeRolesApplyInfo);
-        hotakeRolesApplyInfo.setCandidateId(SecurityUtils.getUserId());
+        Long candidateId = SecurityUtils.getUserId();
+        hotakeRolesApplyInfo.setCandidateId(candidateId);
+        
+        // 校验候选人和岗位的唯一性（排除自身）
+        if (hotakeRolesApplyInfo.getRoleId() != null && hotakeRolesApplyInfo.getId() != null) {
+            HotakeRolesApplyInfo existInfo = hotakeRolesApplyInfoMapper.selectByCandidateIdAndRoleId(candidateId, hotakeRolesApplyInfo.getRoleId());
+            if (existInfo != null && !existInfo.getId().equals(hotakeRolesApplyInfo.getId())) {
+                throw new ServiceException(MessageUtils.messageCustomize("HotakeRolesApplyInfoServiceImpl10001"));
+            }
+        }
+        
         String fileSuffix = FileUtil.getSuffix(hotakeRolesApplyInfo.getCvFile());
         if (StrUtil.isNotEmpty(fileSuffix)) {
             fileSuffix = fileSuffix.toLowerCase();
diff --git a/vetti-hotakes/src/main/java/com/vetti/hotake/service/impl/HotakeRolesInfoServiceImpl.java b/vetti-hotakes/src/main/java/com/vetti/hotake/service/impl/HotakeRolesInfoServiceImpl.java
index 75fdd94..32714a4 100644
--- a/vetti-hotakes/src/main/java/com/vetti/hotake/service/impl/HotakeRolesInfoServiceImpl.java
+++ b/vetti-hotakes/src/main/java/com/vetti/hotake/service/impl/HotakeRolesInfoServiceImpl.java
@@ -134,6 +134,11 @@ public class HotakeRolesInfoServiceImpl extends BaseServiceImpl implements IHota
 
             SysUser user = sysUserMapper.selectUserById(hotakeRolesInfo.getRecruiterId());
             dto.setRecruiterUser(user);
+            
+            // 判断当前用户是否已申请该岗位
+            Long currentUserId = SecurityUtils.getUserId();
+            HotakeRolesApplyInfo existApply = hotakeRolesApplyInfoMapper.selectByCandidateIdAndRoleId(currentUserId, id);
+            dto.setHasApplied(existApply != null);
         }
 
         return dto;
diff --git a/vetti-hotakes/src/main/resources/mapper/hotake/HotakeRolesApplyInfoMapper.xml b/vetti-hotakes/src/main/resources/mapper/hotake/HotakeRolesApplyInfoMapper.xml
index 9ca90a7..8ddfcda 100644
--- a/vetti-hotakes/src/main/resources/mapper/hotake/HotakeRolesApplyInfoMapper.xml
+++ b/vetti-hotakes/src/main/resources/mapper/hotake/HotakeRolesApplyInfoMapper.xml
@@ -305,4 +305,10 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             ( #{item.id}, #{item.candidateId},#{item.recruiterId}, #{item.roleId}, #{item.fullName}, #{item.email}, #{item.phoneNumber}, #{item.cvFile}, #{item.coverLetter}, #{item.candidateStatus}, #{item.stage}, #{item.lastContact}, #{item.cvTemplateJson}, #{item.cvScore}, #{item.cvMd5}, #{item.experience}, #{item.aiMatchScore}, #{item.aiMatchScorePercentage}, #{item.delFlag}, #{item.createBy}, #{item.createTime}, #{item.updateBy}, #{item.updateTime}, #{item.remark})
         </foreach>
     </insert>
+
+    <select id="selectByCandidateIdAndRoleId" resultMap="HotakeRolesApplyInfoResult">
+        <include refid="selectHotakeRolesApplyInfoVo"/>
+        where candidate_id = #{candidateId} and role_id = #{roleId}
+        limit 1
+    </select>
 </mapper>
\ No newline at end of file