Heat pipe (HP) is celebrated as an excellent heat transfer component, consisting of three parts called evaporating section, adiabatic section and condensation section. The main part is a sealed metal tube in which the air and other impurities must have been excluded out to maintain a micro-negative pressure and certain working fluid was filled in. When in operation, the liquid near heat source section evaporates after absorbing heat and becomes vapor, which carries latent heat and flows to the condensation section. After releasing heat through HP shell and outer cooling medium, the vapor then rechanges into liquid, which flows back into evaporating section at the pressure of capillary structure, and starts another working cycle. For the super heat transfer capability endued from its critically designed capillary structure, HP can carry large quantities of heat from heat source instantly and it is acclaimed super heat conductor.