An automatic power off circuit of a non-rebound switch, comprising: a power switch circuit (Q2, R2, R3) and the non-rebound switch; a trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5), connected with the power switch circuit (Q2, R2, R3) and the non-rebound switch; a controller, connected with the power switch circuit (Q2, R2, R3); a power on-off control circuit (Q6, R8, R9), connected with the controller, the power switch circuit (Q2, R2, R3) and the non-rebound switch; characterized in that a first end of the power on-off control circuit (Q6, R8, R9) is connected with a first end of the power switch circuit (Q2, R2, R3) and a first end of the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5), and a second end of the power on-off control circuit (Q6, R8, R9) is connected with the non-rebound switch; a second end of the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) is connected with the non-rebound switch and the second end of the power on-off control circuit (Q6, R8, R9), and a third end of the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) is connected with a second end of the power switch circuit (Q2, R2, R3); a third end of the power switch circuit (Q2, R2, R3) and a third end of the power on-off control circuit (Q6, R8, R9) are respectively connected with two different ends of the controller; the power switch circuit (Q2, R2, R3) are controlled by the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) and the power on-off control circuit (Q6, R8, R9), the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) is controlled by the non-rebound switch, and the power on-off control circuit (Q6, R8, R9) is jointly controlled by the non-rebound switch and the controller; and when the non-rebound switch is turned on, the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) sends a turn-on signal to the power switch circuit (Q2, R2, R3) to turn on the power switch circuit (Q2, R2, R3), the controller detects continuous turn-on time of the non-rebound switch and outputs a turn-off signal in response to the continuous turn-on time exceeding a preset timing time, and the power on-off control circuit (Q6, R8, R9) turns off the power switch circuit (Q2, R2, R3) by using the turn-off signal. a power switch circuit (Q2, R2, R3) and the non-rebound switch; a trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5), connected with the power switch circuit (Q2, R2, R3) and the non-rebound switch; a controller, connected with the power switch circuit (Q2, R2, R3); a power on-off control circuit (Q6, R8, R9), connected with the controller, the power switch circuit (Q2, R2, R3) and the non-rebound switch; characterized in that a first end of the power on-off control circuit (Q6, R8, R9) is connected with a first end of the power switch circuit (Q2, R2, R3) and a first end of the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5), and a second end of the power on-off control circuit (Q6, R8, R9) is connected with the non-rebound switch; a second end of the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) is connected with the non-rebound switch and the second end of the power on-off control circuit (Q6, R8, R9), and a third end of the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) is connected with a second end of the power switch circuit (Q2, R2, R3); a third end of the power switch circuit (Q2, R2, R3) and a third end of the power on-off control circuit (Q6, R8, R9) are respectively connected with two different ends of the controller; the power switch circuit (Q2, R2, R3) are controlled by the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) and the power on-off control circuit (Q6, R8, R9), the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) is controlled by the non-rebound switch, and the power on-off control circuit (Q6, R8, R9) is jointly controlled by the non-rebound switch and the controller; and when the non-rebound switch is turned on, the trigger circuit (Q3, R4, R5, R6, Q4, C5, D1, R7, Q5) sends a turn-on signal to the power switch circuit (Q2, R2, R3) to turn on the power switch circuit (Q2, R2, R3), the controller detects continuous turn-on time of the non-rebound switch and outputs a turn-off signal in response to the continuous turn-on time exceeding a preset timing time, and the power on-off control circuit (Q6, R8, R9) turns off the power switch circuit (Q2, R2, R3) by using the turn-off signal.