The invention relates to a photon key and a light-operated door lock matched with the same. The photon key comprises a color optical signal emitting module which is used for emitting optical signals containing unlocking password information. The light-operated door lock comprises a color optical signal receiving module which is used for receiving the optical signals emitted by the photon key and converting the optical signals into electrical signals. A medium which is used for transmitting the unlocking password information is visual light except laser, and the light-operated door lock is not easy to influence by outside stray light such as sunlight and light emitted by fluorescent lamps and torches when receiving color light while the light-operated door lock is easy to influence by the outside stray light when receiving white light, so that high anti-interference capacity is achieved, noises can be reduced, performances can be improved, and compared with the laser, the color light causes no harm to eyes or skins of humans.