An Automatic spray filling machine is special filling equipment, which is classified as liquid filling equipment and gas filling equipment. Because of the special reason of pressure in aerosol products, the filling is divided into filling and inflation. The filling equipment fills the fixed quantity liquid into the aerosol tank under normal temperature and pressure, and the automatic spray filling machine fills the fixed quantity and certain pressure gas (or liquefied gas) into the aerosol tank. Because the aerosol product must have a certain pressure, the opening of the aerosol tank must be closed before inflation, and the air filling equipment fills the air through the valve opening on the top of the aerosol tank.