The invention relates to a structure improvement of a spray gun, comprising: a gun body having a spray pipe at a front end thereof； a front end of the gun body is provided with a plate machine having an on-off valve； a pressure groove is arranged above the gun body, and The pressure tank group is provided with a pressurized mast； the bottom of the gun body is provided with a pneumatic interface and a vial interface, and the vial interface is further provided with a pipe interface, the pipe interface is connected with a hydraulic pipe； and the gun body is The portion is provided with a one-way valve pressure passage connecting the pressure tank and the air pressure port, a first air passage connecting the air pressure port and the switch valve, and a second gas communicating with the vial port and the switch valve. a passage, a third gas passage connecting the spray pipe and the switch valve, and a drug passage connecting the pipe interface and the third gas passage； a pneumatic cylinder having a pressure joint connected to the pneumatic interface And a cartridge connected to the vial interface； and according to the above structure, the pressurized mast is operated to store the gas pressure of the gas cylinder for providing the spray gun liquid to be sprayed, It can be easily carried to the ward for medical staff.本創作係一種噴藥槍結構改良，包括：一槍體，其前端設有一噴藥管；該槍體前緣設有一具有一開關閥之板機；該槍體上方設有一加壓槽，且該加壓槽組設有一加壓汲桿；該槍體底部設有一氣壓接口及一藥瓶接口，該藥瓶接口內再設有一管接口，該管接口組接一液壓管；而該槍體內部設有一連通該加壓槽與該氣壓接口之單向閥加壓道、一連通該氣壓接口與該開關閥之第一氣通道、一連通該藥瓶接口與該開關閥之第二氣通道、一連通該噴藥管與該開關閥之第三氣通道及一連通該管接口與該第三氣通道之藥通道；一具有一加壓接頭之氣壓筒，其組接於該氣壓接口；及一藥筒，其組接於該藥瓶接口；藉由上述結構，該加壓汲桿供操作使該氣壓筒蓄儲氣體壓力，用以提供該噴藥槍藥液之噴撒使用，達到巡診醫療人員可方便攜帶至病房使用之功效。
