Harmonic flicker test device and test method

The invention relates to a harmonic flicker testing device which comprises a shell, a host is arranged in an inner cavity of the shell, a panel used in cooperation with the shell is fixedly connected to the front face of the host, a fixing frame is fixedly connected to the back face of the bottom of the shell, and an adjusting structure used in cooperation with the host is arranged in an inner cavity of the fixing frame. The adjusting structure comprises a through groove, the through groove is formed in the center of the bottom of the shell, an inner cavity of the through groove is slidably connected with a sliding base fixedly matched with the host, the front face of the sliding base is fixedly connected with an auxiliary spring fixedly matched with the through groove, and the two sides, close to the through groove, of the bottom of the shell are rotationally connected with auxiliary wheels. By arranging the adjusting structure, through grooves, sliding seats, auxiliary springs, auxiliary wheels, a winding f