The invention discloses an air exhaust system for electroplating equipment. The air exhaust system comprises a waste gas treatment box, wherein the back surface of the waste gas treatment box is connected with the back surface of an electroplating box; a gas inlet port is formed in the inner top end of the waste gas treatment box; a pipe I is arranged at the gas outlet end of the gas inlet port; atreatment cabin I is arranged at a gas outlet port of the pipe I; a fan support is arranged at the inner top end of the treatment cabin I; a fan is arranged at the top of the fan support; a treatmentcabin II is arranged on the side surface of the treatment cabin I; the bottom end of the treatment cabin II is connected with the bottom end of the treatment cabin I through a pipe II; a water changing port is formed in the middle part of the pipe II; a bubble plate is arranged at the inner bottom end of the treatment cabin II; bubble holes are formed in the plate surface of the bubble plate; a treatment cabin III is arranged on the side surface of the treatment cabin II; the top of the treatment cabin II is connected with the top of the treatment cabin III through a pipe III; a condensationplate is arranged in the treatment cabin III; and air vents are formed in the plate surface of the condensation plate. The air exhaust system is simple to operate, saves the energy, improves the working efficiency, and prevents workers from body injuries.