The invention provides a heat exchange device of an air inlet and outlet 
pipe system and belongs to the technical field of 
mechanical design. The heat exchange device of the air inlet and outlet 
pipe system comprises an air inlet 
pipe, an engine, an air outlet pipe, an 
air compressor, a 
turbine, connecting pipes, a volume cavity, a 
moving body and a spring. The 
moving body is installed in the volume cavity and contacted with the inner wall surface of the volume cavity in sealing mode, a penetrating pipe penetrates through the upper wall surface and the lower wall surface of the 
moving body, and two ends of the spring are respectively connected with a 
left wall surface of the moving body and the 
left wall surface of the volume cavity. When the engine is at a low-speed working condition, the moving body moves rightward in the volume cavity, a second connecting pipe is communicated with a fifth connecting pipe, outlet air 
waste heat is used for heating inlet air, cold starting performance of the engine is good; and when the engine is at a high-speed working condition, the moving body moves leftward in the 
volume body, and the second connecting pipe is separated from the fifth connecting pipe. The heat exchange device of the air inlet and outlet pipe 
system is reasonable in design, simple in structure and suitable for an engine inlet 
air heating system with a 
turbocharger.