The utility model relates to the technical field of mining gas extraction equipment. The utility model relates to mining equipment, in particular to a scaling prevention and removal device for mininggas extraction equipment. Water pipe, a water flow sensor is embedded in the left side of an inner cavity of the water pipe; the top of the water flow sensor is connected with an equipment host through a wire; the equipment host is positioned above the water pipe; the bottom of the equipment host is connected with a host frame; the outer side of the water pipe is sleeved with the bottom of the main rack; a high-frequency magnetic field radiation device is connected to the right side of the bottom of the equipment host through a wire; the outer side of the high-frequency magnetic field radiation device is sleeved with an electromagnetic shielding device. According to the utility model, the structural arrangement is adopted; the scale prevention and removal device is simple in structure, stable, reliable and convenient to maintain, pipelines of existing equipment do not need to be changed, water does not pass through main equipment, the system is not affected, scale prevention and removal treatment is conducted on water of different regions and different water qualities, separated scale can be filtered out of the water supply system, and the water supply system is purer.