第一步：先设置透明效果。win+i，打开Windows设置，点击个性化，点击颜色，将透明效果打开。

第二步：win+R，输入【regedit】，路径改成：【计算机\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced】
新建一个DWORD(32位值)并命名为【TaskbarAcrylicOpacity【
然后【重启资源管理器】，或者重启电脑即可。
0是全透，10是不透，1至9为半透明

其他版本自测。如果不行按上面的路径删除即可。

如果win10不成功的话可以看一下注册表【计算机\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced】删除这个UseOLEDTaskbarTransparency在试试！

方法1批处理：

reg add "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v TaskbarAcrylicOpacity /t REG_DWORD /d 0 /f

方法2注册表：

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"Start_SearchFiles"=dword:00000002
"ShowCortanaButton"=dword:00000000
"ShowTaskViewButton"=dword:00000000
"TaskbarGlomLevel"=dword:00000002
"Start_NotifyNewApps"=dword:00000000
"LaunchTo"=dword:00000001
"HideFileExt"=dword:00000001
"SeparateProcess"=dword:00000001
"Start_TrackProgs"=dword:00000001
"ServerAdminUI"=dword:00000000
"Hidden"=dword:00000001
"ShowCompColor"=dword:00000001
"DontPrettyPath"=dword:00000000
"ShowInfoTip"=dword:00000001
"HideIcons"=dword:00000000
"MapNetDrvBtn"=dword:00000000
"WebView"=dword:00000001
"Filter"=dword:00000000
"ShowSuperHidden"=dword:00000000
"AutoCheckSelect"=dword:00000000
"IconsOnly"=dword:00000000
"ShowTypeOverlay"=dword:00000001
"ShowStatusBar"=dword:00000001
"StoreAppsOnTaskbar"=dword:00000001
"ListviewAlphaSelect"=dword:00000001
"ListviewShadow"=dword:00000001
"TaskbarAnimations"=dword:00000000
"TaskbarStateLastRun"=hex:70,c4,13,64,00,00,00,00
"ReindexedProfile"=dword:00000001
"StartMenuInit"=dword:0000000d
"TaskbarSizeMove"=dword:00000000
"TaskbarMn"=dword:00000000
"TaskbarAcrylicOpacity"=dword:00000000

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\People]
"PeopleBand"=dword:00000000