The invention belongs to the technical field of T-BOX engines, particularly relates to an intake air temperature control device for a T-BOX engine, and aims to solve the problem that an existing intake air temperature control device of an engine is simple in design structure, single in function and poor in energy-saving and environmental protection effect. The scheme includes that the device comprises a turbocharger and a T-BOX control box, the air inlet end of the turbocharger is connected with an air filter through a guide pipe, a first air inlet pipe is arranged on the inner wall of bottomend of one side of the turbocharger, the engine is arranged at one end, far away from the turbocharger, of the first air inlet pipe, one end of the engine is connected with one end of the turbochargerthrough a guide pipe, and a waste air guide pipe is arranged at the air outlet end of the turbocharger. The device can be directly controlled through WIFI, a smart phone terminal and the like, damageto the engine caused by more sundry dust is avoided, intake air quality is improved, a medium is recycled for heating, exhaust gas waste heat is reasonably utilized, and environmental protection effects of the device are improved.