Light guide key

The utility model discloses a light guide key which comprises a shell, a pressing assembly, a switch piece and a light-emitting piece. The pressing assembly, the switch piece and the light-emitting piece are all arranged in the shell, and the switch piece and the light-emitting piece are located below the pressing assembly. The switch piece is electrically connected with the light-emitting piece; the pressing assembly comprises a key and a light guide part connected with the key, and the key is located above the light guide part; the shell is provided with a through hole matched with the light guide part, and the light guide part is assembled in the through hole and moves in the vertical direction. The light guide piece comprises a first light guide column and a second light guide column connected with the first light guide column; a groove is formed in one side, deviating from the second light guide column, of the first light guide column; a first concave lens and a second concave lens are arranged in the gr