The invention discloses an anti-interference electricity circuit, which comprises a motor control loop. The control loop comprises two auxiliary power supply circuits which are respectively connectedwith a phase line L1 and a zero line N; a control circuit is arranged between the two auxiliary power supply circuits; a thermal relay FH, a stop button SB1, a start button SB2 and an alternating current contactor KM are arranged on the control circuit; a time relay KT1 and a time relay KT2 are also arranged between the two auxiliary power supply circuits; a coil of the time relay KT1 is connectedin parallel with the whole control circuit and is connected between the two auxiliary power supply circuits; a coil of the time relay KT2 is connected to two ends of a coil of the alternating currentcontactor KM in parallel; contacts of the time relay KT1 and the time relay KT2 are connected in series; and the two time relay contacts are connected with the contact of the alternating current contactor KM in parallel after being connected in series. Thus, the self-holding loop of the alternating current contactor is kept on during the power grid interference electricity, and the motor automatically resumes operation after the interference electricity is finished.