The utility model discloses a mobile house built by combining box body modules, which is characterized in that a plurality of modular double-slope roof mobile living houses are stored and transportedthrough the box body modules such as standard containers or shelters and the like, and functional box body modules necessary for basic life are assorted and guaranteed; during building, the box modules are supported on the two sides, the multiple sets of double-slope roof living room modules are built in an extended mode in the middle, and the living room guarantee system with the box modules on the two sides and the multiple double-slope roof movable room modules in the middle being combined and extended is formed. The side walls of the box body modules on the two sides also serve as side walls at the two ends of the living room module; according to the utility model, each module is provided with a single door capable of locking in and out, so that internal communication among the modulescan be realized without going out, independent use of the modules can be ensured, nearby matching use and multifunctional application among the modules are realized, and diversified task guarantee requirements of troops under field operation conditions are met.