Modularized building system for rapid self-locking interconnection between box bodies

The utility model relates to a modularization building system with rapid self-locking interconnection among box bodies, which comprises a plurality of modularization room units, every two modularization room units can be in self-locking interconnection, each modularization room unit comprises a house main body and a plurality of vertical self-locking connecting pieces arranged on the house main body, each vertical self-locking connecting piece is composed of a lock head and a lock, and the lock head and the lock are arranged on the house main body. The lock comprises a lock rod, the lock head comprises a top plate, two lock piece plates and an elastic piece, the two lock piece plates are movably arranged on the top plate, notches are machined in the surfaces of the two lock piece plates, the two ends of the elastic piece are connected with the lock piece plates and the top plate respectively, and the elastic piece is used for pushing the two lock piece plates to be relatively close to each other. And the notc