The invention provides an electronic equipment coating method. Electronic equipment is mainly used for being frozen in advance to a certain temperature, the purpose of coating agents preferentially and effectively coating the inside and the outside of the electronic equipment is achieved, meanwhile, the dewing feature of water - the competitive adsorption material is combined, the methods of vacuumizing and cooling are reasonably used for effectively avoiding coating failures or effect deterioration caused by competitive adsorption of vapor in the air, and meanwhile during the drying process of a coating layer by vacuumizing, the drying and solidifying efficiency of a coating film after atomization processing is effectively improved. The invention further provides a used device in the electronic equipment coating method. The device is composed of a vacuumizing device, an atomization device, a control device and a freezing device. The freezing device can be independently arranged, and the entire structure is simplified and low in cost. The control device is used for controlling the pressure, the temperature, operation of a vacuum pump and atomization and adding of coating agents, and operating is convenient.