Abstract: A new type of stuffing with film-invertion configuration combined with plate falling film technique for dehumidifier is proposed. With the designed experimental equipment，the dehumidification performance of this new type of film-falling stuffing was evaluated under different volume flux，inlet concentration and temperature of the solution as well as different volume flux，inlet temperature and moisture content of air. These results provides some bases for the investigation，industrial design and application of dehumidification stuffing with film–invertion falling film technique，and also provides some help in the development of compact dehumidifier with high efficiency.