Keying illuminating structure

The utility model provides a key lightening structure which has the structure that a key circuit plate with light permeability and a light guiding plate are respectively arranged at the lower part of a key with the light permeability, and the periphery of the light guiding plate is attached to a lighting body. When the lighting body sends out light rays, the light rays are uniformly spread and transmitted in the light guiding plate and penetrate out from the key circuit plate with the light permeability and the key with the light permeability, and the penetrated light rays have good brightness and uniformity. The dynamic luminous display of on-off, brightness or color, etc. for the light rays emitted by the lighting body are controlled through a control circuit.