A mechanical disaligned connecting pipe communication system in the technical field of mechanical design comprises intake pipes, an engine, exhaust pipes, an air compressor, a turbine, connecting pipes, a volume chamber, a moving body and a spring, the moving body is mounted in the volume chamber and is in tight contact with the inner wall of the volume chamber, two penetrating pipes run through the upper and lower walls of the moving body, and both ends of the spring are respectively connected with the left wall of the moving body and the left wall of the volume chamber. When the engine is in a low-speed working condition, the moving body moves to the right in the volume chamber, the second connecting pipe communicates with the fifth connecting pipe, the intake air is heated by the residual heat of the exhausted air, and therefore the cold starting performance of the engine is good; when the engine is in a high-speed working condition, the moving body moves to the left in the volume chamber, and the second connecting pipe is partitioned from the fifth connecting pipe. The design of the mechanical disaligned connecting pipe communication system is reasonable, the structure is simple, and the mechanical disaligned connecting pipe communication system is applicable to an engine intake air heating system with a turbocharger.