diff --git a/common-web/src/main/java/com/baiyue/common/web/GlobalExceptionHandler.java b/common-web/src/main/java/com/baiyue/common/web/GlobalExceptionHandler.java
index 8df2058e0..da926f706 100644
--- a/common-web/src/main/java/com/baiyue/common/web/GlobalExceptionHandler.java
+++ b/common-web/src/main/java/com/baiyue/common/web/GlobalExceptionHandler.java
@@ -24,6 +24,7 @@ import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 import org.springframework.web.servlet.resource.NoResourceFoundException;
 import org.springframework.web.server.ResponseStatusException;
+import org.springframework.web.multipart.MaxUploadSizeExceededException;
 
 import java.util.LinkedHashMap;
 import java.util.Map;
@@ -105,6 +106,16 @@ public class GlobalExceptionHandler {
         return failure(ResultCode.CONFLICT, "资源正在处理中，请稍后重试", request);
     }
 
+    @ExceptionHandler(MaxUploadSizeExceededException.class)
+    public ResponseEntity<ApiResponse<Void>> handleMaxUploadSize(
+            MaxUploadSizeExceededException exception, HttpServletRequest request) {
+        long maxBytes = exception.getMaxUploadSize();
+        String message = maxBytes > 0
+                ? "上传文件不能超过" + Math.max(1, (maxBytes + 1024 * 1024 - 1) / (1024 * 1024)) + "MB"
+                : "上传文件超过服务允许大小";
+        return failure(ResultCode.BAD_REQUEST, message, request);
+    }
+
     @ExceptionHandler(Exception.class)
     public ResponseEntity<ApiResponse<Void>> handleUnexpected(Exception exception, HttpServletRequest request) {
         log.error("Unhandled request failure requestId={} traceId={}",
diff --git a/common-web/src/test/java/com/baiyue/common/web/GlobalExceptionHandlerTest.java b/common-web/src/test/java/com/baiyue/common/web/GlobalExceptionHandlerTest.java
index c98f8c305..d70a952ba 100644
--- a/common-web/src/test/java/com/baiyue/common/web/GlobalExceptionHandlerTest.java
+++ b/common-web/src/test/java/com/baiyue/common/web/GlobalExceptionHandlerTest.java
@@ -17,6 +17,7 @@ import org.springframework.test.util.ReflectionTestUtils;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.server.ResponseStatusException;
 import org.springframework.dao.CannotAcquireLockException;
+import org.springframework.web.multipart.MaxUploadSizeExceededException;
 
 import java.lang.reflect.Method;
 
@@ -129,6 +130,20 @@ class GlobalExceptionHandlerTest {
         assertThat(response.getBody().requestId()).isEqualTo("lock-timeout");
     }
 
+    @Test
+    void oversizedMultipartReturnsClearBadRequestInsteadOfInternalError() {
+        MockHttpServletRequest request = new MockHttpServletRequest();
+        request.setAttribute(CorrelationContext.REQUEST_ID, "oversized-photo");
+
+        var response = handler.handleMaxUploadSize(
+            new MaxUploadSizeExceededException(10L * 1024 * 1024), request);
+
+        assertThat(response.getStatusCode().value()).isEqualTo(200);
+        assertThat(response.getBody().code()).isEqualTo(ResultCode.BAD_REQUEST.code());
+        assertThat(response.getBody().message()).isEqualTo("上传文件不能超过10MB");
+        assertThat(response.getBody().requestId()).isEqualTo("oversized-photo");
+    }
+
     private void paging(long page) {
     }
 }
diff --git a/config/nacos/overseas/lastleg-service.yml b/config/nacos/overseas/lastleg-service.yml
index c4d919be3..3c63429f0 100644
--- a/config/nacos/overseas/lastleg-service.yml
+++ b/config/nacos/overseas/lastleg-service.yml
@@ -1,4 +1,8 @@
 spring:
+  servlet:
+    multipart:
+      max-file-size: ${LASTLEG_MULTIPART_MAX_FILE_SIZE:10MB}
+      max-request-size: ${LASTLEG_MULTIPART_MAX_REQUEST_SIZE:11MB}
   datasource:
     url: ${LASTLEG_DB_URL}
     username: ${LASTLEG_DB_USERNAME}
diff --git a/lastleg-service/src/main/resources/application.yml b/lastleg-service/src/main/resources/application.yml
index 9a76d798a..b44c1dfed 100644
--- a/lastleg-service/src/main/resources/application.yml
+++ b/lastleg-service/src/main/resources/application.yml
@@ -1,6 +1,10 @@
 server:
   port: ${LASTLEG_PORT:9303}
 spring:
+  servlet:
+    multipart:
+      max-file-size: ${LASTLEG_MULTIPART_MAX_FILE_SIZE:10MB}
+      max-request-size: ${LASTLEG_MULTIPART_MAX_REQUEST_SIZE:11MB}
   sql:
     init:
       mode: always
diff --git a/lastleg-service/src/test/java/com/baiyue/lastleg/inboundplan/pda/ReceivingPhotoUploadConfigurationContractTest.java b/lastleg-service/src/test/java/com/baiyue/lastleg/inboundplan/pda/ReceivingPhotoUploadConfigurationContractTest.java
new file mode 100644
index 000000000..137aaf146
--- /dev/null
+++ b/lastleg-service/src/test/java/com/baiyue/lastleg/inboundplan/pda/ReceivingPhotoUploadConfigurationContractTest.java
@@ -0,0 +1,29 @@
+package com.baiyue.lastleg.inboundplan.pda;
+
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class ReceivingPhotoUploadConfigurationContractTest {
+    @Test
+    void lastlegAcceptsTheSameTenMegabyteLimitAsFileService() throws Exception {
+        String application = read("lastleg-service/src/main/resources/application.yml");
+        String overseas = read("config/nacos/overseas/lastleg-service.yml");
+
+        for (String configuration : new String[]{application, overseas}) {
+            assertThat(configuration).contains(
+                "max-file-size: ${LASTLEG_MULTIPART_MAX_FILE_SIZE:10MB}",
+                "max-request-size: ${LASTLEG_MULTIPART_MAX_REQUEST_SIZE:11MB}");
+        }
+    }
+
+    private static String read(String relative) throws Exception {
+        Path path = Path.of(relative);
+        if (!Files.exists(path)) path = Path.of("..").resolve(relative);
+        return Files.readString(path, StandardCharsets.UTF_8);
+    }
+}