diff --git a/src/main/java/com/petstore/controller/ReportController.java b/src/main/java/com/petstore/controller/ReportController.java
index 8899275..fb6244d 100644
--- a/src/main/java/com/petstore/controller/ReportController.java
+++ b/src/main/java/com/petstore/controller/ReportController.java
@@ -5,6 +5,7 @@ import com.petstore.entity.ReportImage;
 import com.petstore.entity.Store;
 import com.petstore.service.ReportHighlightVideoService;
 import com.petstore.service.ReportService;
+import com.petstore.service.ReportTestimonialService;
 import com.petstore.service.StoreService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.MediaType;
@@ -23,6 +24,7 @@ public class ReportController {
     private final ReportService reportService;
     private final StoreService storeService;
     private final ReportHighlightVideoService reportHighlightVideoService;
+    private final ReportTestimonialService reportTestimonialService;
     
     @Value("${app.base-url:http://localhost:8080}")
     private String baseUrl;
@@ -235,4 +237,30 @@ public class ReportController {
         }
         return Map.of("code", 200, "message", "删除成功");
     }
+
+    /**
+     * 宠主寄语（生成分享海报前提交，同一报告覆盖更新；供后续口碑墙）
+     */
+    @PostMapping("/{token}/testimonial")
+    public Map<String, Object> submitTestimonial(@PathVariable("token") String token,
+                                                 @RequestBody Map<String, Object> body) {
+        String content = body.get("content") == null ? "" : body.get("content").toString();
+        boolean isPublic = true;
+        if (body.get("isPublic") != null) {
+            isPublic = Boolean.parseBoolean(body.get("isPublic").toString());
+        }
+        try {
+            var row = reportTestimonialService.submit(token, content, isPublic);
+            return Map.of(
+                    "code", 200,
+                    "data", Map.of(
+                            "id", row.getId(),
+                            "content", row.getContent(),
+                            "isPublic", row.getIsPublic()
+                    )
+            );
+        } catch (IllegalArgumentException e) {
+            return Map.of("code", 400, "message", e.getMessage());
+        }
+    }
 }
diff --git a/src/main/java/com/petstore/entity/ReportTestimonial.java b/src/main/java/com/petstore/entity/ReportTestimonial.java
new file mode 100644
index 0000000..72ef21b
--- /dev/null
+++ b/src/main/java/com/petstore/entity/ReportTestimonial.java
@@ -0,0 +1,43 @@
+package com.petstore.entity;
+
+import jakarta.persistence.*;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+/**
+ * 宠主在生成分享海报时填写的一句话（口碑素材）。
+ * 同一报告保留一条：重复提交则更新内容与时间。
+ */
+@Data
+@Entity
+@Table(
+        name = "t_report_testimonial",
+        indexes = {
+                @Index(name = "idx_rt_store_time", columnList = "store_id,create_time")
+        }
+)
+public class ReportTestimonial {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "report_id", nullable = false, unique = true)
+    private Long reportId;
+
+    @Column(name = "store_id")
+    private Long storeId;
+
+    @Column(length = 200, nullable = false)
+    private String content;
+
+    @Column(name = "is_public", nullable = false, columnDefinition = "TINYINT(1) DEFAULT 1")
+    private Boolean isPublic = true;
+
+    @Column(name = "create_time")
+    private LocalDateTime createTime;
+
+    @Column(name = "update_time")
+    private LocalDateTime updateTime;
+}
diff --git a/src/main/java/com/petstore/mapper/ReportTestimonialMapper.java b/src/main/java/com/petstore/mapper/ReportTestimonialMapper.java
new file mode 100644
index 0000000..75fc601
--- /dev/null
+++ b/src/main/java/com/petstore/mapper/ReportTestimonialMapper.java
@@ -0,0 +1,11 @@
+package com.petstore.mapper;
+
+import com.petstore.entity.ReportTestimonial;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface ReportTestimonialMapper extends JpaRepository<ReportTestimonial, Long> {
+
+    Optional<ReportTestimonial> findByReportId(Long reportId);
+}
diff --git a/src/main/java/com/petstore/service/ReportTestimonialService.java b/src/main/java/com/petstore/service/ReportTestimonialService.java
new file mode 100644
index 0000000..6e69598
--- /dev/null
+++ b/src/main/java/com/petstore/service/ReportTestimonialService.java
@@ -0,0 +1,48 @@
+package com.petstore.service;
+
+import com.petstore.entity.Report;
+import com.petstore.entity.ReportTestimonial;
+import com.petstore.mapper.ReportMapper;
+import com.petstore.mapper.ReportTestimonialMapper;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDateTime;
+
+@Service
+@RequiredArgsConstructor
+public class ReportTestimonialService {
+
+    private final ReportMapper reportMapper;
+    private final ReportTestimonialMapper testimonialMapper;
+
+    /**
+     * 保存或更新该报告下的宠主寄语（幂等：按 report_id 唯一）。
+     */
+    public ReportTestimonial submit(String reportToken, String content, boolean isPublic) {
+        Report report = reportMapper.findFirstByReportTokenAndDeletedFalse(reportToken).orElse(null);
+        if (report == null) {
+            throw new IllegalArgumentException("报告不存在或已失效");
+        }
+        if (content == null || content.isBlank()) {
+            throw new IllegalArgumentException("寄语不能为空");
+        }
+        String trimmed = content.trim();
+        if (trimmed.length() > 200) {
+            throw new IllegalArgumentException("寄语最多 200 字");
+        }
+
+        LocalDateTime now = LocalDateTime.now();
+        ReportTestimonial row = testimonialMapper.findByReportId(report.getId()).orElse(null);
+        if (row == null) {
+            row = new ReportTestimonial();
+            row.setReportId(report.getId());
+            row.setStoreId(report.getStoreId());
+            row.setCreateTime(now);
+        }
+        row.setContent(trimmed);
+        row.setIsPublic(isPublic);
+        row.setUpdateTime(now);
+        return testimonialMapper.save(row);
+    }
+}