The utility model relates to the technical field of hot air guns, in particular to a multi-gear hot air gun. According to the technical scheme, the spray gun comprises a gun body and a
handle installed at the bottom of the gun body, a gun
nozzle is arranged at one end of the gun body, and the spray gun further comprises a blocking cover installed at one end of the gun body and used for covering the gun
nozzle; and the transmission mechanism is arranged on the gun body and is used for quickly opening or closing the blocking cover. According to the hot air gun, the blocking cover, the gun body, the transmission mechanism, the pressing mechanism and other structures are matched, fingers and
skin of a user can be protected from being hurt by high-temperature air, and after the blocking cover is automatically closed, safety accidents caused by misoperation in the using process of the hot air gun can be avoided. When the blocking cover is closed, dust and sundries can be prevented from entering the gun
nozzle, the gun nozzle is kept clean, and the service life of the hot air gun is prolonged, and the performance of the hot air gun is improved. In addition, due to the design of the pressing mechanism, the blocking cover can be automatically closed, operation is easy and convenient, and a user can easily control the opening and closing state of the blocking cover as needed.