Luminous key and luminous keyboard

The invention relates to a luminous key and a luminous keyboard. The luminous key comprises a light guide baseboard, a circuit board, a seat body, a cantilever, a keycap and a light source, wherein the light guide baseboard is provided with a mounting part; the circuit board is arranged on the light guide baseboard; the seat body is fixed on the mounting part of the light guide baseboard; the cantilever is connected to the seat body through a pivot; the keycap is arranged on the cantilever; the light source is arranged on one side or a middle broken hole of the light guide baseboard; and a light ray emitted by the light source passes through the light guide baseboard and the keycap and is projected out of the keycap. According to the luminous key and the luminous keyboard, the baseboard is the light guide baseboard; the base of the key is fixed on the light guide baseboard in a manner of jetting forming, hot smelting or penetration; the light guide baseboard is used as a structure supporting body; and the ove