The invention discloses an Internet of Things three-phase asynchronous motor monitoring control device and a monitoring control method thereof, and the device comprises an MCU, a current sampling module, a voltage sampling module, a metering module, a wireless communication module, and a switch module. The current sampling module and the voltage sampling module are both connected with the metering module, the metering module, the wireless communication module and the switch module are all connected with the MCU, the switch module is used for driving the low-voltage direct-current relay, the low-voltage direct-current relay is used for controlling the alternating-current contactor, the alternating-current contactor is used for controlling the motor, and the wireless communication module is used for communicating with a cloud platform. According to the method, various faults occurring in the operation process of various motors can be quickly and accurately recognized, the alternating current contactor is automatically controlled to cut off the load in an abnormal state, information is reported in real time, and a user is reminded to take corresponding measures.