Backlight module and lighting keyboard

A backlight module for a lighting keyboard, wherein the lighting keyboard has a specific function key, and the backlight module comprises:

• a lighting board having a first light emitting unit and a second light emitting unit;
• a light guide panel having a first light guide hole and a second light guide hole, wherein the first light emitting unit is in the first light guide hole, and the second light emitting unit is in the second light guide hole;
• a shielding sheet having a blocking portion, wherein the shielding sheet, the light guide panel and the lighting board are stacked from top to bottom, and the blocking portion overlaps in projection with the first light emitting unit and the second light emitting unit;
• and
• a reflective layer disposed between the light guide panel and the lighting board, and having a first reflective layer hole, a second reflective layer hole and an attachment portion;
• wherein, the light guide panel has a light guide panel slot, and the light guide panel slot overlaps in projection with the blocking portion and a boundary of a keycap projection area of the specific function key;
• wherein, the first light guide hole is vertically aligned with the first reflective layer hole, the second light guide hole is vertically aligned with the second reflective layer hole, the light guide panel slot is vertically aligned with the attachment portion, the first light emitting unit is located in the first reflective layer hole, the second light emitting unit is located in the second reflective layer hole, and the attachment portion overlaps in projection with the blocking portion and the boundary of the keycap projection area.