In view of situation that a lot of coal mines use methods of checking or changing wire rope by stopping production periodically to ensure running safety of wire rope of hoist, a hoisting load monitoring device of mine was designed. The device uses weighing sensor to test tension value signal real-timely, the signal is transmitted to wireless signal receiving module that installed at wellhead by use of wireless electromagnetic mode after the signal is processed, then the signal is transmitted by the wireless signal receiving module to industrial computer which processes the data and outputs control signal. Meanwhile, the device can detect switching parameters of measure hopper in close and skip in position, so as to realize faults judgement of overload, pot-sticking and unbalance tension when combining the parameters with detected tension value and can make corresponding alarming. The actual application showed that the device can monitor faults of overload, pot-sticking and unbalance tension and ensures running safety of hoist system.