diff --git a/src/main/java/cn/citycraft/ProtectItem/commands/CommandBan.java b/src/main/java/cn/citycraft/ProtectItem/commands/CommandBan.java
index fb1eb02..1975d4d 100644
--- a/src/main/java/cn/citycraft/ProtectItem/commands/CommandBan.java
+++ b/src/main/java/cn/citycraft/ProtectItem/commands/CommandBan.java
@@ -16,8 +16,8 @@ public class CommandBan extends BaseCommand {
 	public CommandBan(final ProtectItem main) {
 		super("ban");
 		this.plugin = main;
-		setOnlyPlayerExecutable();
 		setPermission("pi.ban");
+		setOnlyPlayerExecutable();
 		setDescription("§c封禁手持物品");
 		setPossibleArguments("<封禁类型>");
 	}
diff --git a/src/main/java/cn/citycraft/ProtectItem/commands/CommandUnban.java b/src/main/java/cn/citycraft/ProtectItem/commands/CommandUnban.java
index f9afb75..bb39a06 100644
--- a/src/main/java/cn/citycraft/ProtectItem/commands/CommandUnban.java
+++ b/src/main/java/cn/citycraft/ProtectItem/commands/CommandUnban.java
@@ -16,8 +16,8 @@ public class CommandUnban extends BaseCommand {
 	public CommandUnban(final ProtectItem main) {
 		super("unban");
 		this.plugin = main;
-		setOnlyPlayerExecutable();
 		setPermission("pi.unban");
+		setOnlyPlayerExecutable();
 		setDescription("§a解禁手持物品");
 		setPossibleArguments("<解禁类型>");
 	}
diff --git a/src/main/java/cn/citycraft/ProtectItem/utils/ItemManager.java b/src/main/java/cn/citycraft/ProtectItem/utils/ItemManager.java
index f57754a..551d977 100644
--- a/src/main/java/cn/citycraft/ProtectItem/utils/ItemManager.java
+++ b/src/main/java/cn/citycraft/ProtectItem/utils/ItemManager.java
@@ -19,8 +19,12 @@ public class ItemManager {
 	public ItemManager(final ProtectItem main) {
 		plugin = main;
 		itemconfig = new FileConfig(plugin, "banitems.yml");
-		itemlist = (HashMap<String, List<ActionType>>) itemconfig.get("banitems");
-		if (itemlist == null) {
+		try {
+			itemlist = (HashMap<String, List<ActionType>>) itemconfig.get("banitems");
+			if (itemlist == null) {
+				itemlist = new HashMap<String, List<ActionType>>();
+			}
+		} catch (final Exception e) {
 			itemlist = new HashMap<String, List<ActionType>>();
 		}
 	}
diff --git a/src/main/resources/banitems.yml b/src/main/resources/banitems.yml
index aef8359..e69de29 100644
--- a/src/main/resources/banitems.yml
+++ b/src/main/resources/banitems.yml
@@ -1 +0,0 @@
-banitems: []
\ No newline at end of file
diff --git a/src/main/resources/plugin.yml b/src/main/resources/plugin.yml
index f5db107..49ed723 100644
--- a/src/main/resources/plugin.yml
+++ b/src/main/resources/plugin.yml
@@ -7,7 +7,7 @@ website: ${jenkins.url}/job/${project.artifactId}/
 commands:
   pi:
     description: 物品保护插件
-    usage: 使用/pi 查看物品名称!
+    usage: 使用/pi help查看帮助!
 permissions:
   pi.bypass:
     default: op