Saving type wall spraying device

A saving type wall spraying device comprises an electric drive vehicle body, an electric linear sliding table, a power module, an electric spraying machine body and an equipment box. The device is further provided with a wireless transmitting circuit, a wireless receiving circuit and a distance control mechanism. The electric spraying machine body, the paint liquid barrel, the power module, the wireless receiving circuit and the control circuit are installed in the equipment box and electrically connected, and the equipment box is installed at the upper end of a sweeping board of the electric spraying machine body. Wherein the lower ends of two sets of electric linear sliding tables are installed on the two sides of the upper end of the trolley plate, and the third set of electric linear sliding table is installed at the front ends of sliding blocks of the two sets of electric linear sliding tables. The distance control mechanism comprises an electric push rod, a photoelectric switch and a control circuit, th