The principle of micro heat regenerative adsorption dryer desiccant and no heat regeneration is basically the same, different is its low drying air for regeneration after the first heated and then enters the regeneration tower the dryer drying, heating device is added on the structure, the regeneration of the program increased the heating and cold blowing process. Heat regenerative adsorption dryer advantage energy costs less, only 6%. But switching cycle long mechanical wear small, improves the reliability of equipment. It eventually finished drying than no heat regeneration also good.