The invention discloses an anti-interference electricity contactor time delay device. The time delay device comprises an alternating current auxiliary power supply input module, an auxiliary power supply state detection module, a switch power supply module, a switch power supply state detection module, a pull-in voltage circuit module, a holding voltage circuit module, a selection control switch module, a button, a display, an alarm, an output module, a contactor coil, a contactor coil operation state detection module and a master control unit module. Setting of delay time of 0.1s to 9.9s, adjusting of a holding voltage of 2.0V to 12V and setting of a power loss voltage and a recovery voltage can be achieved through setting of different parameters, the time delay device has a display, an alarm output and a motion output outlet, therefore functions of an anti-interference electricity contactor time delay module, such as high reliability, flexible selection application, low cost, energy saving and simple control line are achieved, and the purpose of delay time release of contactor functions during interference electricity of the system is achieved.