The invention discloses a night light control method and device and a night light, and belongs to the technical field of computer applications. The method includes the steps of sensing a manipulationbehavior triggered by changing a current working mode of a night light through a vibration sensor, confirming whether a working state of the vibration sensor changes according to the sensed manipulation behavior, and when the working state of the vibration sensor changes, controlling the night light to switch the current working mode. In addition, the night light device and the night light are also provided. With the night light control method and device and the night light, the sensitivity of vibration detection of the night light can be increased.