diff --git a/src/main/kotlin/xyz/fortern/minehunt/command/MinehuntCommand.kt b/src/main/kotlin/xyz/fortern/minehunt/command/MinehuntCommand.kt
index 04c19af..deb4b3f 100644
--- a/src/main/kotlin/xyz/fortern/minehunt/command/MinehuntCommand.kt
+++ b/src/main/kotlin/xyz/fortern/minehunt/command/MinehuntCommand.kt
@@ -164,55 +164,64 @@ class MinehuntCommand(
         }
         
         val rule = args[1]
-        when (rule) {
+        return when (rule) {
             "hunter_respawn_cd" -> {
-                if (args.size == 2) {
-                    // 获取命令详情
-                    if (flag) {
-                        sendRuleInfo(sender, RuleKey.HUNTER_READY_CD)
-                    }
-                    return null
-                } else if (args.size == 3) {
-                    if (flag) {
-                        if (console.gameRules.setGameRuleValueSafe(RuleKey.HUNTER_READY_CD, args[2])) {
-                        
-                        } else {
-                        
-                        }
-                    } else {
-                    
-                    }
-                } else {
-                    if (flag) {
-                        sender.sendMessage(Component.text("参数过多"))
-                    } else {
-                        return null
-                    }
-                }
+                getOrChangeRule(args, flag, sender, RuleKey.HUNTER_RESPAWN_CD)
             }
             
             "hunter_ready_cd" -> {
-                if (args.size == 2) {
-                
-                }
+                getOrChangeRule(args, flag, sender, RuleKey.HUNTER_READY_CD)
             }
             
             "friendly_fire" -> {
-                if (args.size == 2) {
-                
-                }
+                getOrChangeRule(args, flag, sender, RuleKey.FRIENDLY_FIRE)
             }
             
             else -> {
-                return if (flag) {
+                if (flag) {
                     sender.sendMessage(Component.text("不存在的规则项"))
                     null
                 } else {
-                    if (args.size == 2) subCommand.filter { it.startsWith(args[0]) } else null
+                    if (args.size == 2) rules.filter { it.startsWith(args[0]) } else null
                 }
             }
         }
-        return null
+    }
+    
+    /**
+     * 读取或改变游戏规则
+     */
+    private fun getOrChangeRule(
+        args: List<String>,
+        flag: Boolean,
+        sender: CommandSender,
+        ruleKey: RuleKey<*>
+    ): List<String>? {
+        return if (args.size == 2) {
+            // 获取规则详情
+            if (flag) {
+                sendRuleInfo(sender, ruleKey)
+            }
+            null
+        } else if (args.size == 3) {
+            // 给规则赋值
+            if (flag) {
+                if (console.gameRules.setGameRuleValueSafe(ruleKey, args[2])) {
+                    sender.sendMessage(Component.text("规则修改成功", NamedTextColor.GREEN))
+                } else {
+                    sender.sendMessage(Component.text("不合适的值", NamedTextColor.RED))
+                }
+                null
+            } else {
+                ruleKey.recommendedValues
+            }
+        } else {
+            // 参数过多
+            if (flag) {
+                sender.sendMessage(Component.text("参数过多"))
+            }
+            null
+        }
     }
     
     /**
diff --git a/src/main/kotlin/xyz/fortern/minehunt/rule/GameRules.kt b/src/main/kotlin/xyz/fortern/minehunt/rule/GameRules.kt
index 3a9e08e..692063a 100644
--- a/src/main/kotlin/xyz/fortern/minehunt/rule/GameRules.kt
+++ b/src/main/kotlin/xyz/fortern/minehunt/rule/GameRules.kt
@@ -16,14 +16,14 @@ class GameRules internal constructor() {
         setRuleValue(FRIENDLY_FIRE, true)
     }
     
-    fun <T : Any> setGameRuleValueSafe(rule: RuleKey<T>, value: String): Boolean {
-        val okValue = rule.validate(value) ?: return false
+    fun <T> setGameRuleValueSafe(rule: RuleKey<T>, value: String): Boolean {
+        val okValue: T = rule.validate(value) ?: return false
         setRuleValue(rule, okValue)
         return true
     }
     
-    private fun <T : Any> setRuleValue(rule: RuleKey<T>, value: T) {
-        map[rule] = value
+    private fun <T> setRuleValue(rule: RuleKey<T>, value: T) {
+        map[rule] = value!!
     }
     
     @Suppress("UNCHECKED_CAST")
diff --git a/src/main/kotlin/xyz/fortern/minehunt/rule/RuleKey.kt b/src/main/kotlin/xyz/fortern/minehunt/rule/RuleKey.kt
index 527dd3d..f5a3e0b 100644
--- a/src/main/kotlin/xyz/fortern/minehunt/rule/RuleKey.kt
+++ b/src/main/kotlin/xyz/fortern/minehunt/rule/RuleKey.kt
@@ -24,10 +24,15 @@ class RuleKey<T> private constructor(
      */
     val typeInfo: String,
     
+    /**
+     * 命令补全时的推荐值
+     */
+    val recommendedValues: List<String>,
+    
     /**
      * 对输入的String进行校验，成功则返回转换后的值，失败则返回null
      */
-    val validate: (String) -> T?
+    val validate: (String) -> T?,
 ) {
     /**
      * 这里存放每一个规则的Key
@@ -41,22 +46,31 @@ class RuleKey<T> private constructor(
             }
         }
         
-        val HUNTER_READY_CD = RuleKey("hunter_ready_cd", "猎人出生倒计时(秒)", Int::class.java, "Integer") {
-            try {
-                val i = it.toInt()
-                if (i in 0..120) i else null
-            } catch (ex: NumberFormatException) {
-                null
+        val HUNTER_READY_CD =
+            RuleKey("hunter_ready_cd", "猎人出生倒计时(秒)", Int::class.java, "Integer", listOf("0", "15", "30")) {
+                try {
+                    val i = it.toInt()
+                    if (i in 0..120) i else null
+                } catch (ex: NumberFormatException) {
+                    null
+                }
             }
-        }
-        val HUNTER_RESPAWN_CD = RuleKey("hunter_respawn_cd", "猎人重生倒计时(秒)", Int::class.java, "Integer") {
-            try {
-                val i = it.toInt()
-                if (i in 0..120) i else null
-            } catch (ex: NumberFormatException) {
-                null
+        val HUNTER_RESPAWN_CD =
+            RuleKey("hunter_respawn_cd", "猎人重生倒计时(秒)", Int::class.java, "Integer", listOf("0, 15, 30")) {
+                try {
+                    val i = it.toInt()
+                    if (i in 0..120) i else null
+                } catch (ex: NumberFormatException) {
+                    null
+                }
             }
-        }
-        val FRIENDLY_FIRE = RuleKey("friendly_fire", "队友之间是否有伤害", Boolean::class.java, "Boolean", boolValidate)
+        val FRIENDLY_FIRE = RuleKey(
+            "friendly_fire",
+            "队友之间是否有伤害",
+            Boolean::class.java,
+            "Boolean",
+            listOf("true", "false"),
+            boolValidate
+        )
     }
 }