In the working process of the pump, the moving water in the pump is affected by the friction between the pump and the flow channel, the surface of the pump impeller and the viscosity of the water itself. The energy consumed by the pump is mainly used to resist the moving friction and eddy resistance on the surface of the water. The energy (head loss) consumed by water in the process of activity is used to restrain the internal friction and the friction between water and equipment interface. If pump, impeller surface lubrication (this surface is called hydraulic lubrication surface) surface resistance is smaller. The energy consumption is small. Spray polymer composite data on the flow surface and impeller of the pump to make the surface form the hydraulic lubrication surface. The surface brightness of the super lubrication surface coating is 20 times of that of the polished stainless steel. This extremely lubricated surface reduces the stratification of the fluid in the pump, thus reducing the internal turbulence of the pump, reducing the volume loss and hydraulic loss in the pump, and reducing the power consumption. In order to reduce the loss of flow resistance and improve the hydraulic efficiency of the pump, the mechanical efficiency and volumetric efficiency can also be improved at a certain level. The compactness of the molecular structure of the coating can isolate the contact between air, water and other media and the base metal of the impeller of the water pump, and minimize the electrochemical corrosion and corrosion. In addition, the polymer composite material is actually a polymer, which has chemical corrosion resistance, can improve the corrosion resistance of the pump, and can greatly strengthen the ability of the pump to resist erosion and corrosion.