The invention discloses a unit modular folding mobile house suitable for combined use, which comprises top plates, front foldable frames, rear foldable frames, front door plates, left side plates, right side plates, rear plates and base plates. The unit modular design is adopted by the mobile house, so that the mobile house can be used alone, and butting combination of a plurality of unit houses free from limitation in the amount can be performed at the front and the back of the mobile house and/or the left and the right of the mobile house; various units at the joints are communicated; the inner plane surfaces of the base plates parallel, level and obstacle-free. All the moving parts are connected in hinge joint manners, so that the safe, fast and labor-saving operation is realized during disassembly and assembly; multi-functional development and utilization are performed according to the structural characteristics of the plates of the side plates of all the unit houses, for example, upturning plates of the right side plates are folded upwards and outwards, so that a goods selling house structure is formed. The invention has the advantages that the mobile house is convenient to transport, is safe, convenient and fast to disassemble and assemble, and has the functions of rain protection, wind protection, earthquake resistance, warm preservation and the like; the mobile house can be widely used in the rescue and relief work, construction and camping in the field and the like.