A switch control circuit includes: a clock circuit (110) configured to generate a first clock control signal (CLK1) and a second clock control signal (CLK2); a voltage boosting circuit (120) configured to receive the second clock control signal (CLK2) and an operating voltage outputted by the power source (VDD); and boost the operating voltage by a preset value to form a switch control signal (H1) under the control of the second clock control signal (CLK2); and an inverting circuit (130) configured to receive the first clock control signal (CLK1) and the switch control signal (H1), and determine whether or not to output the switch control signal (H1) to the switch circuit according to the first clock control signal (CLK1), so as to control on/off of the switch circuit.