A backlight keyswitch includes a keyswitch body, a board connected to the keyswitch body, a backlight module and a membrane disposed between the keyswitch body and the board. The backlight module is disposed under the board and includes a backlight circuit board, a light-blocking sheet, a first reflecting ink layer, and a light guide plate disposed between the light-blocking sheet and the backlight circuit board. The first reflecting ink layer is formed on the light-blocking sheet and located above the backlight circuit board, for at least partially reflecting light emitted by the backlight circuit board back to an optical microstructure in the light guide plate to prevent center symbols of the keyswitch body from being too bright, such that light can be incident to the keyswitch body via scattering of the optical microstructure to increase brightness of side symbols of the keyswitch body.