diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandExecuteResult.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandExecuteResult.kt
index 9076951b4..3ec14fe62 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandExecuteResult.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandExecuteResult.kt
@@ -58,7 +58,7 @@ public sealed class CommandExecuteResult {
     /** 执行执行时发生了一个非法参数错误 */
     public class IllegalArgument(
         /** 指令执行时发生的错误 */
-        public override val exception: IllegalArgumentException,
+        public override val exception: IllegalCommandArgumentException,
         /** 尝试执行的指令 */
         public override val command: Command,
         /** 尝试执行的指令名 */
@@ -180,7 +180,7 @@ public fun CommandExecuteResult.isExecutionException(): Boolean {
 }
 
 /**
- * 当 [this] 为 [CommandExecuteResult.ExecutionFailed] 时返回 `true`
+ * 当 [this] 为 [CommandExecuteResult.PermissionDenied] 时返回 `true`
  */
 @JvmSynthetic
 public fun CommandExecuteResult.isPermissionDenied(): Boolean {
@@ -192,7 +192,7 @@ public fun CommandExecuteResult.isPermissionDenied(): Boolean {
 }
 
 /**
- * 当 [this] 为 [CommandExecuteResult.ExecutionFailed] 时返回 `true`
+ * 当 [this] 为 [CommandExecuteResult.CommandNotFound] 时返回 `true`
  */
 @JvmSynthetic
 public fun CommandExecuteResult.isCommandNotFound(): Boolean {
@@ -204,7 +204,7 @@ public fun CommandExecuteResult.isCommandNotFound(): Boolean {
 }
 
 /**
- * 当 [this] 为 [CommandExecuteResult.ExecutionFailed] 或 [CommandExecuteResult.CommandNotFound] 时返回 `true`
+ * 当 [this] 为 [CommandExecuteResult.ExecutionFailed], [CommandExecuteResult.IllegalArgument] 或 [CommandExecuteResult.CommandNotFound] 时返回 `true`
  */
 @JvmSynthetic
 public fun CommandExecuteResult.isFailure(): Boolean {
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandSender.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandSender.kt
index 219c2485e..0f8314384 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandSender.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/CommandSender.kt
@@ -282,6 +282,13 @@ public sealed class AbstractCommandSender : CommandSender, CoroutineScope {
         if (this is CommandSenderOnMessage<*>) {
             val cause = e.rootCauseOrSelf
 
+            // TODO: 2020/10/17
+            //      CommandArgumentParserException 作为 IllegalCommandArgumentException 不会再进入此函数
+            //      已在
+            //       - [console]  CommandManagerImpl.commandListener
+            //       - [terminal] ConsoleThread.kt
+            //      处理
+
             val message = cause
                 .takeIf { it is CommandArgumentParserException }?.message
                 ?: "${cause::class.simpleName.orEmpty()}: ${cause.message}"
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/IllegalCommandArgumentException.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/IllegalCommandArgumentException.kt
new file mode 100644
index 000000000..0e8936524
--- /dev/null
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/IllegalCommandArgumentException.kt
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019-2020 Mamoe Technologies and contributors.
+ *
+ * 此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
+ * Use of this source code is governed by the GNU AFFERO GENERAL PUBLIC LICENSE version 3 license that can be found via the following link.
+ *
+ * https://github.com/mamoe/mirai/blob/master/LICENSE
+ *
+ */
+
+@file:Suppress("unused")
+
+package net.mamoe.mirai.console.command
+
+import net.mamoe.mirai.console.command.descriptor.CommandArgumentParserException
+
+/**
+ * 在处理参数时遇到的 _正常_ 错误. 如参数不符合规范, 参数值越界等.
+ *
+ * [message] 将会发送给指令调用方.
+ *
+ * @see CommandArgumentParserException
+ */
+public open class IllegalCommandArgumentException : IllegalArgumentException {
+    public constructor() : super()
+    public constructor(message: String?) : super(message)
+    public constructor(message: String?, cause: Throwable?) : super(message, cause)
+    public constructor(cause: Throwable?) : super(cause)
+}
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/descriptor/CommandArgumentParserException.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/descriptor/CommandArgumentParserException.kt
index faae4cf1e..25a59067d 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/descriptor/CommandArgumentParserException.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/descriptor/CommandArgumentParserException.kt
@@ -11,15 +11,18 @@
 
 package net.mamoe.mirai.console.command.descriptor
 
+import net.mamoe.mirai.console.command.IllegalCommandArgumentException
+
 /**
  * 在解析参数时遇到的 _正常_ 错误. 如参数不符合规范等.
  *
  * [message] 将会发送给指令调用方.
  *
+ * @see IllegalCommandArgumentException
  * @see CommandValueArgumentParser
  * @see CommandValueArgumentParser.illegalArgument
  */
-public class CommandArgumentParserException : RuntimeException {
+public class CommandArgumentParserException : IllegalCommandArgumentException {
     public constructor() : super()
     public constructor(message: String?) : super(message)
     public constructor(message: String?, cause: Throwable?) : super(message, cause)
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/executeCommandInternal.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/executeCommandInternal.kt
index a9ff54cca..cfd1648d7 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/executeCommandInternal.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/command/executeCommandInternal.kt
@@ -37,7 +37,7 @@ internal suspend fun CommandSender.executeCommandInternal(
             )
         },
         onFailure = { exception ->
-            return if (exception is IllegalArgumentException) CommandExecuteResult.IllegalArgument(
+            return if (exception is IllegalCommandArgumentException) CommandExecuteResult.IllegalArgument(
                 commandName = commandName,
                 command = command,
                 exception = exception,