diff --git a/safety-eval-adapter/src/main/java/org/qinan/safetyeval/adapter/web/regulator/RegulatorEvalReportController.java b/safety-eval-adapter/src/main/java/org/qinan/safetyeval/adapter/web/regulator/RegulatorEvalReportController.java
index adb661e3..0e962b73 100644
--- a/safety-eval-adapter/src/main/java/org/qinan/safetyeval/adapter/web/regulator/RegulatorEvalReportController.java
+++ b/safety-eval-adapter/src/main/java/org/qinan/safetyeval/adapter/web/regulator/RegulatorEvalReportController.java
@@ -9,10 +9,7 @@ import org.qinan.safetyeval.client.co.report.EvalReportLibraryCO;
 import org.qinan.safetyeval.client.co.report.RegulatorEvalReportSummaryCO;
 import org.qinan.safetyeval.client.dto.PageResponse;
 import org.qinan.safetyeval.client.dto.SingleResponse;
-import org.qinan.safetyeval.client.dto.regulator.RegulatorEvalReportAddCmd;
-import org.qinan.safetyeval.client.dto.regulator.RegulatorEvalReportBatchDownloadCmd;
-import org.qinan.safetyeval.client.dto.regulator.RegulatorEvalReportExportCmd;
-import org.qinan.safetyeval.client.dto.regulator.RegulatorEvalReportPageQuery;
+import org.qinan.safetyeval.client.dto.regulator.*;
 import org.qinan.safetyeval.domain.exception.BizException;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
@@ -23,6 +20,7 @@ import java.io.IOException;
 import java.net.URLEncoder;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
+import java.util.List;
 
 @Api(tags = "监管端-安评报告库")
 @RestController
@@ -107,4 +105,10 @@ public class RegulatorEvalReportController {
         }
         return message.replace("\\", "\\\\").replace("\"", "\\\"");
     }
+
+    @ApiOperation("报告抽查")
+    @PostMapping("/spotCheckReport")
+    public SingleResponse<List<EvalReportLibraryCO>> spotCheckReport(@RequestBody SpotCheckReportCmd cmd) {
+        return regulatorEvalReportApi.spotCheckReport(cmd);
+    }
 }
diff --git a/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/regulator/RegulatorEvalReportExecutor.java b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/regulator/RegulatorEvalReportExecutor.java
index 4fcc3e93..c05bb1ee 100644
--- a/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/regulator/RegulatorEvalReportExecutor.java
+++ b/safety-eval-app/src/main/java/org/qinan/safetyeval/app/executor/regulator/RegulatorEvalReportExecutor.java
@@ -1,5 +1,6 @@
 package org.qinan.safetyeval.app.executor.regulator;
 
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import org.qinan.safetyeval.app.executor.support.ReportProfileCoConverter;
 import org.qinan.safetyeval.client.api.regulator.RegulatorEvalReportApi;
 import org.qinan.safetyeval.client.co.report.EvalReportLibraryCO;
@@ -8,6 +9,7 @@ import org.qinan.safetyeval.client.dto.PageResponse;
 import org.qinan.safetyeval.client.dto.SingleResponse;
 import org.qinan.safetyeval.client.dto.regulator.RegulatorEvalReportAddCmd;
 import org.qinan.safetyeval.client.dto.regulator.RegulatorEvalReportPageQuery;
+import org.qinan.safetyeval.client.dto.regulator.SpotCheckReportCmd;
 import org.qinan.safetyeval.domain.entity.EvalReportEntity;
 import org.qinan.safetyeval.domain.entity.OrgInfoEntity;
 import org.qinan.safetyeval.domain.gateway.OrgInfoGateway;
@@ -15,6 +17,9 @@ import org.qinan.safetyeval.domain.query.EvalReportQuery;
 import org.qinan.safetyeval.domain.query.OrgInfoQuery;
 import org.qinan.safetyeval.domain.query.PageResult;
 import org.qinan.safetyeval.domain.service.EvalReportDomainService;
+import org.qinan.safetyeval.infrastructure.dataobject.EvalReportDO;
+import org.qinan.safetyeval.infrastructure.mapper.EvalReportMapper;
+import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
@@ -23,13 +28,8 @@ import org.springframework.util.StringUtils;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.LocalTime;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 
 @Service
@@ -41,6 +41,8 @@ public class RegulatorEvalReportExecutor implements RegulatorEvalReportApi {
 
     @Autowired(required = false)
     private OrgInfoGateway orgInfoGateway;
+    @Autowired
+    private EvalReportMapper evalReportMapper;
 
     @Override
     public SingleResponse<RegulatorEvalReportSummaryCO> summary() {
@@ -136,6 +138,55 @@ public class RegulatorEvalReportExecutor implements RegulatorEvalReportApi {
         return get(result.getId());
     }
 
+    @Override
+    public SingleResponse<List<EvalReportLibraryCO>> spotCheckReport(SpotCheckReportCmd cmd) {
+        List<EvalReportDO> evalReportDOS = evalReportMapper.selectList(new LambdaQueryWrapper<EvalReportDO>()
+                .eq(EvalReportDO::getOrgId, cmd.getOrgId()));
+        List<EvalReportDO> evalReports = pickDistinctRandom(evalReportDOS, cmd.getRandomNumber(), EvalReportDO::getId);
+        List<EvalReportLibraryCO> vo = evalReports.stream().map(item -> {
+            EvalReportLibraryCO evalReportLibraryCO = new EvalReportLibraryCO();
+            BeanUtils.copyProperties(item, evalReportLibraryCO);
+            OrgInfoEntity org = orgInfoGateway.get(item.getOrgId());
+            if (org != null) {
+                evalReportLibraryCO.setOrgName(org.getUnitName());
+            }
+            return evalReportLibraryCO;
+        }).collect(Collectors.toList());
+        return SingleResponse.success(vo);
+    }
+
+    /**
+     * 高性能随机抽取（按ID去重，不重复抽取）
+     * @param list 原始数据列表（可能包含重复ID）
+     * @param n 需要抽取的数量
+     * @param idExtractor 获取ID的函数，例如 User::getId
+     * @return 抽取的结果列表
+     */
+    public static <T, ID> List<T> pickDistinctRandom(List<T> list, int n, Function<T, ID> idExtractor) {
+        if (list == null || list.isEmpty() || n <= 0) {
+            return Collections.emptyList();
+        }
+        Map<ID, T> distinctMap = new LinkedHashMap<>(list.size());
+        for (T item : list) {
+            distinctMap.putIfAbsent(idExtractor.apply(item), item);
+        }
+        List<T> distinctList = new ArrayList<>(distinctMap.values());
+        int total = distinctList.size();
+        if (total <= n) {
+            return distinctList;
+        }
+        Random rand = new Random();
+        Set<Integer> selectedIndices = new HashSet<>(n);
+        while (selectedIndices.size() < n) {
+            selectedIndices.add(rand.nextInt(total));
+        }
+        List<T> result = new ArrayList<>(n);
+        for (int idx : selectedIndices) {
+            result.add(distinctList.get(idx));
+        }
+        return result;
+    }
+
     private long countSubmitted(Integer yearFrom, Integer exactYear) {
         EvalReportQuery q = new EvalReportQuery();
         q.setPageNum(1L);
diff --git a/safety-eval-client/src/main/java/org/qinan/safetyeval/client/api/regulator/RegulatorEvalReportApi.java b/safety-eval-client/src/main/java/org/qinan/safetyeval/client/api/regulator/RegulatorEvalReportApi.java
index af9938aa..1fd2a17d 100644
--- a/safety-eval-client/src/main/java/org/qinan/safetyeval/client/api/regulator/RegulatorEvalReportApi.java
+++ b/safety-eval-client/src/main/java/org/qinan/safetyeval/client/api/regulator/RegulatorEvalReportApi.java
@@ -6,6 +6,9 @@ import org.qinan.safetyeval.client.dto.PageResponse;
 import org.qinan.safetyeval.client.dto.SingleResponse;
 import org.qinan.safetyeval.client.dto.regulator.RegulatorEvalReportAddCmd;
 import org.qinan.safetyeval.client.dto.regulator.RegulatorEvalReportPageQuery;
+import org.qinan.safetyeval.client.dto.regulator.SpotCheckReportCmd;
+
+import java.util.List;
 
 public interface RegulatorEvalReportApi {
 
@@ -16,4 +19,6 @@ public interface RegulatorEvalReportApi {
     SingleResponse<EvalReportLibraryCO> get(Long id);
 
     SingleResponse<EvalReportLibraryCO> add(RegulatorEvalReportAddCmd cmd);
+
+    SingleResponse<List<EvalReportLibraryCO>> spotCheckReport(SpotCheckReportCmd cmd);
 }
diff --git a/safety-eval-client/src/main/java/org/qinan/safetyeval/client/dto/regulator/SpotCheckReportCmd.java b/safety-eval-client/src/main/java/org/qinan/safetyeval/client/dto/regulator/SpotCheckReportCmd.java
new file mode 100644
index 00000000..ac4b2612
--- /dev/null
+++ b/safety-eval-client/src/main/java/org/qinan/safetyeval/client/dto/regulator/SpotCheckReportCmd.java
@@ -0,0 +1,16 @@
+package org.qinan.safetyeval.client.dto.regulator;
+
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+
+/**
+ * 机构端上传历史报告（对齐原型「上传历史报告」）
+ */
+@Data
+public class SpotCheckReportCmd {
+    @ApiModelProperty(value = "报告编号")
+    private String orgId;
+
+    @ApiModelProperty(value = "报告随机数, 最大值10")
+    private Integer randomNumber;
+}