Purification and dehumidification all-in-one machine

The utility model relates to a purifying and dehumidifying all-in-one machine which comprises dehumidifying equipment and a purifying assembly, the dehumidifying equipment is provided with a dehumidifying air inlet and a dehumidifying air outlet, the purifying assembly is provided with a purifying air inlet and a purifying air outlet, the purifying assembly is detachably connected with the dehumidifying equipment, and the dehumidifying air outlet is relatively communicated with the purifying air inlet. The purifying assembly is detachably connected to the downstream of the dehumidifying equipment, so that in the using process, on one hand, the dehumidifying equipment dehumidifies at the upstream first, the purifying assembly at the downstream can be protected to a certain extent, and the service life of the purifying assembly is prolonged; on the other hand, whether the purification assembly is used for participating in purification or not can be selected according to needs, synchronization of the dehumidific