@patate5290 said in 5inch HDMI LCD with retropie:

but it's work with rasbian

If it works with Raspbian, chances are it would work with RetroPie, since RetroPie is based on Raspbian Lite. I see in the product page that it requires a driver - did you install the driver on Raspbian to make it work ? Do you have a page/link to the manual and/or driver ?