The invention discloses an air dewetting and dedusting integrated device. The air dewetting and dedusting integrated device comprises a box, a first water stopping plate, a second water stopping plate, a dewetting device, a dedusting device and a connecting device, wherein the first water stopping plate, the second water stopping plate, the dewetting device and the dedusting device are arranged inside the box; the connecting device is arranged outside the box; the first water stopping plate and the second water stopping plate are fixedly connected to the inner wall of the box; the first water stopping plate is close to an air feeding end of the box; the dewetting device and the dedusting device are positioned between the first water stopping plate and the second water stopping plate; compared with the dewetting device, the dedusting device is closer to the air feeding end of the box; and the connecting device is respectively connected with the dewetting device and the dedusting device, so that a circulating loop is formed. According to the device and the dewetting and dedusting method, two circulations are carried out by the same solution, dewetting, dedusting and reheating are organically combined, therefore, a system has the advantages of energy conservation and environmental protection on solution dewetting, meanwhile, extra filter equipment is not required, but a function of removing particulate matters and pollutants in air can be fulfilled, air supply resistance of the system is reduced, and energy is saved.