The present invention provides an air discharge implement for a portable pressurized sprayer comprising a cylindrical main body of discharging duct, an external hood jacket, a conical moving plug and a compression spring. Wherein the main body of hollow discharging duct includes a cylinder bore, a cylindrical discharging mount for containing conical moving plug, and an air passage interposed between hollow discharge chamber and cylinder bore. The external hood jacket is a hollow holder to contain compression spring. The conical moving plug includes a top cone and a planar base with plural footing legs so that a water flow gap is created between the planar base and the air passage at the cylinder bore. If the present invention is properly connected to a water outtake hose of a portable pressurized sprayer, either no air or certain air mingled in the compressed water, it can achieve the air-discharging effect completely.