diff --git a/src/main/java/cn/lunadeer/dominion/controllers/DominionController.java b/src/main/java/cn/lunadeer/dominion/controllers/DominionController.java
index 10e265c..54edd69 100644
--- a/src/main/java/cn/lunadeer/dominion/controllers/DominionController.java
+++ b/src/main/java/cn/lunadeer/dominion/controllers/DominionController.java
@@ -1,5 +1,6 @@
 package cn.lunadeer.dominion.controllers;
 
+import cn.lunadeer.dominion.Dominion;
 import cn.lunadeer.dominion.dtos.DominionDTO;
 import cn.lunadeer.dominion.utils.Notification;
 import cn.lunadeer.dominion.utils.Time;
@@ -15,7 +16,7 @@ import static cn.lunadeer.dominion.controllers.Apis.notOwner;
 
 public class DominionController {
 
-    public static List<DominionDTO> all(Player owner){
+    public static List<DominionDTO> all(Player owner) {
         return DominionDTO.selectAll(owner.getUniqueId());
     }
 
@@ -62,6 +63,17 @@ public class DominionController {
             Notification.error(owner, "禁止跨世界操作");
             return null;
         }
+        int x_length = Math.abs((int) (loc1.getX() - loc2.getX()));
+        int y_length = Math.abs((int) (loc1.getY() - loc2.getY()));
+        int z_length = Math.abs((int) (loc1.getZ() - loc2.getZ()));
+        if (x_length < 4 || y_length < 4 || z_length < 4) {
+            Notification.error(owner, "领地的任意一边长度不得小于4");
+            return null;
+        }
+        if (x_length > Dominion.config.getMaxX() || y_length > Dominion.config.getMaxY() || z_length > Dominion.config.getMaxZ()) {
+            Notification.error(owner, "领地尺寸不能超过 " + Dominion.config.getMaxX() + " x " + Dominion.config.getMaxY() + " x " + Dominion.config.getMaxZ());
+            return null;
+        }
         DominionDTO dominion = new DominionDTO(owner.getUniqueId(), name, owner.getWorld().getName(),
                 (int) Math.min(loc1.getX(), loc2.getX()), (int) Math.min(loc1.getY(), loc2.getY()),
                 (int) Math.min(loc1.getZ(), loc2.getZ()), (int) Math.max(loc1.getX(), loc2.getX()),
diff --git a/src/main/java/cn/lunadeer/dominion/utils/ConfigManager.java b/src/main/java/cn/lunadeer/dominion/utils/ConfigManager.java
index d852138..d83c19d 100644
--- a/src/main/java/cn/lunadeer/dominion/utils/ConfigManager.java
+++ b/src/main/java/cn/lunadeer/dominion/utils/ConfigManager.java
@@ -21,6 +21,9 @@ public class ConfigManager {
         _db_user = _file.getString("Database.User", "postgres");
         _db_pass = _file.getString("Database.Pass", "postgres");
         _auto_create_radius = _file.getInt("AutoCreateRadius", 10);
+        _max_x = _file.getInt("MaxX", 128);
+        _max_y = _file.getInt("MaxY", 64);
+        _max_z = _file.getInt("MaxZ", 128);
     }
 
     public Boolean isDebug() {
@@ -64,6 +67,36 @@ public class ConfigManager {
         return _db_pass;
     }
 
+    public Integer getMaxX() {
+        return _max_x;
+    }
+
+    public void setMaxX(Integer max_x) {
+        _max_x = max_x;
+        _file.set("MaxX", max_x);
+        _plugin.saveConfig();
+    }
+
+    public Integer getMaxY() {
+        return _max_y;
+    }
+
+    public void setMaxY(Integer max_y) {
+        _max_y = max_y;
+        _file.set("MaxY", max_y);
+        _plugin.saveConfig();
+    }
+
+    public Integer getMaxZ() {
+        return _max_z;
+    }
+
+    public void setMaxZ(Integer max_z) {
+        _max_z = max_z;
+        _file.set("MaxZ", max_z);
+        _plugin.saveConfig();
+    }
+
     public Integer getAutoCreateRadius() {
         return _auto_create_radius;
     }
@@ -86,4 +119,8 @@ public class ConfigManager {
     private String _db_name;
 
     private Integer _auto_create_radius;
+
+    private Integer _max_x;
+    private Integer _max_y;
+    private Integer _max_z;
 }
diff --git a/src/main/resources/config.yml b/src/main/resources/config.yml
index 5882e6d..fe67947 100644
--- a/src/main/resources/config.yml
+++ b/src/main/resources/config.yml
@@ -6,5 +6,8 @@ Database:
   Pass: dominion
 
 AutoCreateRadius: 10
+MaxX: 128
+MaxY: 64
+MaxZ: 128
 
 Debug: false
\ No newline at end of file