The invention relates to a double-contact induction switch circuit applied to a beauty instrument and a control method thereof. The circuit comprises a first switching circuit, a detecting circuit connected with the first switching circuit, a second switching circuit connected with the detecting circuit, first and second contacts connected with the detecting circuit, and a control unit which is connected with the first switching circuit, the detecting circuit and the second switching circuit. The control unit outputs a first switching control signal to control on-off of the first switching circuit, outputs a second switching control signal to control on-off of the second switching circuit, and outputs a detection signal to detect whether the first contact and the second contact contact a human body at the same time when the first switching circuit and the second switching circuit are off to control the beauty instrument to enter a beauty care mode or a low power consumption mode. According to the invention, the circuit can accurately detect whether the first contact and the second contact of the beauty instrument contact the human body at the same time; energy waste is avoided; aneffective nursing mode is acquired; and the user experience is improved.