Indoor circulation dehumidification device

The utility model discloses an indoor circulation dehumidification device which comprises a shell, a circulation dehumidification main machine installed in the shell and a suction inlet formed in the side wall of the shell, the shell is sequentially provided with a second groove and a filter screen on the front side of the suction inlet, and a rotating shaft is arranged in the second groove. A driving structure for driving the rotating shaft to rotate and a fixing structure for fixing the filter screen are arranged in the second groove; according to the utility model, a fixing structure and a driving structure in the second groove are adopted, when the filter screen needs to be cleaned or replaced, the filter screen can be disassembled by rotating the nut, the filter screen can be installed only by placing the filter screen in the first groove, pulling out the rolling door and rotating the rotating shaft, so that the gear rotates, and the first external thread is meshed with the internal thread of the central