Disclosed is a novel pump fitting for cleaning solution of a chemical sprayer, the fitting having a one piece structure so that a possibility of corrosion as well as leakage rate and failure rate can be minimized, a significant cost reduction and facilitation resulting from the single body can be implemented, and good material characteristics such as heat-resisting property, chemical resisting property, corrosion-resisting property can be predetermined in advance in accordance with properties of the chemical sprayer which is usually in contact with vibration, high heat, and poisonous ingredients. The pump fitting has an injection-molded and strong one piece structure where joints, defects such as leakage, corrosion, detachment between a direction change valve 110, a fitting 120, a cleaning solution inlet 121, and a cleaning solution pumping cylinder 130, are not present.
