Supporting seat and direct type backlight module

The invention relates to a supporting seat and a direct type backlight module. The supporting seat is provided with a base and a sliding piece, wherein the base is provided with a sliding chute, and the inner surface of the sliding chute is provided with at least one positioning part; the sliding piece is arranged in the sliding chute, and the sliding piece is provided with a sliding seat and a clamping part; the sliding seat is provided with at least one second positioning part positioned on one surface of the sliding seat, and the second positioning part is suitable for being meshed with the first positioning part; and the clamping part is arranged on the sliding seat and extends out of the sliding chute.