An attachable and movable deodorizer for enclosed space has a body with a plurality of inlet holes and at least one outlet hole. The body has a fan, a photocatalyst filter, and an ultraviolet (UV) control circuit board connected to an UV-A LED lamp. Whereby the body is able to be disposed in an enclosed space such as trash bin and shoes cabinet, and to suck in the dirty air in the enclosed space by the fan for the dirty air to pass through the photocatalyst filter and then to be discharged from the outlet hole. The stench chemical substance in the dirty air is therefore purified in the photocatalysis process.