diff --git a/designer-base/src/main/java/com/fr/start/server/FineEmbedServerActivator.java b/designer-base/src/main/java/com/fr/start/server/FineEmbedServerActivator.java
index 5fa8173d4..854d260bf 100644
--- a/designer-base/src/main/java/com/fr/start/server/FineEmbedServerActivator.java
+++ b/designer-base/src/main/java/com/fr/start/server/FineEmbedServerActivator.java
@@ -6,6 +6,7 @@ import com.fr.module.Activator;
 import com.fr.module.ModuleRole;
 import com.fr.stable.EncodeConstants;
 import com.fr.stable.ProductConstants;
+import com.fr.stable.StringUtils;
 import com.fr.startup.FineWebApplicationInitializer;
 import com.fr.third.springframework.web.SpringServletContainerInitializer;
 import com.fr.third.springframework.web.context.support.AnnotationConfigWebApplicationContext;
@@ -26,6 +27,8 @@ import java.util.Set;
  */
 public class FineEmbedServerActivator extends Activator {
 
+    private static final String TOMCAT_MAX_HEADER_SIZE = "tomcat-maxHttpHeaderSize";
+
     private Tomcat tomcat;
 
     @Override
@@ -68,6 +71,7 @@ public class FineEmbedServerActivator extends Activator {
         // 8.5.x 请求参数带特殊字符被tomcat拒绝 []|{}^\`"<>
         tomcat.getConnector().setProperty("relaxedQueryChars", "[]|{}^&#x5c;&#x60;&quot;&lt;&gt;");
         setMaxPostSize();
+        setMaxHttpHeaderSize();
         String docBase = new File(WorkContext.getCurrent().getPath()).getParent();
 
         //内置的上下文使用工程目录比如webroot
@@ -102,6 +106,17 @@ public class FineEmbedServerActivator extends Activator {
         }
     }
 
+    private void setMaxHttpHeaderSize() {
+        String value = System.getProperty(TOMCAT_MAX_HEADER_SIZE);
+        if (StringUtils.isNotEmpty(value)) {
+            try {
+                tomcat.getConnector().setProperty("maxHttpHeaderSize", value);
+            } catch (Exception e) {
+                FineLoggerFactory.getLogger().error(e.getMessage(), e);
+            }
+        }
+    }
+
 
     private void stopServerActivator() {