diff --git a/library/think/console/output/Descriptor.php b/library/think/console/output/Descriptor.php
index 6d98d53c..23dc6481 100644
--- a/library/think/console/output/Descriptor.php
+++ b/library/think/console/output/Descriptor.php
@@ -69,7 +69,7 @@ class Descriptor
      * 描述参数
      * @param InputArgument $argument
      * @param array         $options
-     * @return string|mixed
+     * @return void
      */
     protected function describeInputArgument(InputArgument $argument, array $options = [])
     {
@@ -93,7 +93,7 @@ class Descriptor
      * 描述选项
      * @param InputOption $option
      * @param array       $options
-     * @return string|mixed
+     * @return void
      */
     protected function describeInputOption(InputOption $option, array $options = [])
     {
@@ -128,7 +128,7 @@ class Descriptor
      * 描述输入
      * @param InputDefinition $definition
      * @param array           $options
-     * @return string|mixed
+     * @return void
      */
     protected function describeInputDefinition(InputDefinition $definition, array $options = [])
     {
@@ -173,7 +173,7 @@ class Descriptor
      * 描述指令
      * @param Command $command
      * @param array   $options
-     * @return string|mixed
+     * @return void
      */
     protected function describeCommand(Command $command, array $options = [])
     {
@@ -208,7 +208,7 @@ class Descriptor
      * 描述控制台
      * @param Console $console
      * @param array   $options
-     * @return string|mixed
+     * @return void
      */
     protected function describeConsole(Console $console, array $options = [])
     {