The internal circuit board of the cow silica gel patting lamp is equipped with a sound sensitive resistor. When people clap their hands, it will light up, and when they clap their hands, it will go out. Therefore, it can be placed in the corridor, wardrobe, car seat, room, etc., so that people can return home or other dark places in the dark at night. With a tap of their hands, the lamp can be turned on, and people can feel relieved.