diff --git a/src/main/java/com/ctrip/zeus/service/build/conf/LocationConf.java b/src/main/java/com/ctrip/zeus/service/build/conf/LocationConf.java
index 94227466..c6c21dab 100644
--- a/src/main/java/com/ctrip/zeus/service/build/conf/LocationConf.java
+++ b/src/main/java/com/ctrip/zeus/service/build/conf/LocationConf.java
@@ -334,4 +334,11 @@ public class LocationConf {
         confWriter.writeLine("return 404 \"Not Found!\";");
         confWriter.writeLocationEnd();
     }
+
+    public void writeDefaultRootLocation(ConfWriter confWriter) {
+        confWriter.writeLocationStart("/");
+        confWriter.writeCommand("error_page", "404 /404page");
+        confWriter.writeCommand("return", "404");
+        confWriter.writeLocationEnd();
+    }
 }
diff --git a/src/main/java/com/ctrip/zeus/service/build/conf/ServerConf.java b/src/main/java/com/ctrip/zeus/service/build/conf/ServerConf.java
index 1e94a316..bd39dfa5 100644
--- a/src/main/java/com/ctrip/zeus/service/build/conf/ServerConf.java
+++ b/src/main/java/com/ctrip/zeus/service/build/conf/ServerConf.java
@@ -1,10 +1,7 @@
 package com.ctrip.zeus.service.build.conf;
 
 import com.ctrip.zeus.exceptions.ValidationException;
-import com.ctrip.zeus.model.entity.Domain;
-import com.ctrip.zeus.model.entity.Group;
-import com.ctrip.zeus.model.entity.Slb;
-import com.ctrip.zeus.model.entity.VirtualServer;
+import com.ctrip.zeus.model.entity.*;
 import com.ctrip.zeus.service.build.ConfigHandler;
 import com.ctrip.zeus.util.AssertUtils;
 import org.springframework.stereotype.Component;
@@ -91,6 +88,8 @@ public class ServerConf {
             }
         }
 
+        addDefaultRootLoaction(slbId, vsId, groups, confWriter);
+
         confWriter.writeServerEnd();
         return confWriter.getValue();
     }
@@ -205,4 +204,23 @@ public class ServerConf {
         }
         return result;
     }
+
+    private void addDefaultRootLoaction(Long slbId, Long vsId, List<Group> groups, ConfWriter confWriter) throws Exception {
+        // 0. enable flag
+        if (!configHandler.getEnable("default.root.location", slbId, vsId, null, false)) {
+            return;
+        }
+        // 1. return while already have root location .
+        for (Group group : groups) {
+            for (GroupVirtualServer gvs : group.getGroupVirtualServers()) {
+                if (gvs.getVirtualServer().getId().equals(vsId)) {
+                    if (gvs.getPath().trim().equals("/") || gvs.getPath().trim().equals("~* ^/")) {
+                        return;
+                    }
+                }
+            }
+        }
+        // 2. add default location instead while not found root location.
+        locationConf.writeDefaultRootLocation(confWriter);
+    }
 }