Heat pipe is a kind of heat transfer element with good heat transfer performance. The tube is vacuum and full of working medium. When the evaporation end of the heat pipe is heated, the working medium will vaporize after evaporation. The vaporized medium will cool and heat up at the condensation end, condense into liquid, and fall back to the evaporation end. In this way, the heat transfer is completed by reciprocating. The heat pipe heat exchanger is composed of several heat pipes and shells. The heat pipe heat exchanger is divided into two-dimensional heat pipe, three-dimensional heat pipe, four-dimensional heat pipe and five-dimensional heat pipe, which can be used in different fields and environments to effectively achieve the effect of energy conservation and emission reduction.