Rotors turns solely, driven by motor. Process air pass through 3/4 area of windward side of rotors, most of moisture in air is adsorbed by rotors, and the air is left rotors by blower, together with other treatment means,finally, it is sent to workplace; while the process air is entering into rotors, another part of air is heated first, then drive by regener ation blower, the moisture, which is obtained from process air, is brought out 1/4 area of rotors to achieve the regeneration of rotors, and make adsorption dehumidificationbe able to go on continuously. Its advantages of ste ady system and handling dewdrop tem perature make it be applied in various profession exten-sively.