The invention relates to an airplane cabin door capable of lifting telescopically and sliding back and forth. The airplane cabin door is arranged on the inner side of a machine body and is driven by a set of motor; up-and-down lifting of the cabin door is realized by a lifting supporting rod, a limiting pin and the like; front-and-back movement of the cabin door is realized by a driving belt, a telescopic guide rail and the like. The cabin door can be applied to various kinds of mission load needing to be used telescopically; when the mission load needs to extend out, the cabin door ascends and withdraws towards the inner side of the machine body, and the mission load extends out of the opening of the cabin door; after the mission load is withdrawn, the cabin door slides forwards and descends, and the opening of the cabin door is closed. The whole set of mechanism has few assemblies, is easy to mount and small in occupied space, does not have special requirements on the shape of the outer surface, and is suitable for being used on an airplane. The cabin door is suitable for the fields of automobile skylights, building skylights and the like which need telescopic lifting and front-and-back sliding functions.