MODULAR INTEGRATED BUILDING AND CONSTRUCTION METHOD THEREOF

Disclosed herewith a modular integrated building and a construction method thereof. The building comprises multiple prefabricated room units. A bottom of a load-bearing structure of the prefabricated room unit is provided with a semi-prefabricated connecting port. Reinforcing bars arranged at a top of the prefabricated room unit of a next floor are inserted in the connecting port and thus connected with reinforcing bars arranged therein, so that the prefabricated room units of two adjacent floors are connected with each other through in-situ casting concrete in the connecting port. A cast-in-situ concrete interlayer is arranged on a top plate of the prefabricated room unit of a next floor, for connecting adjacent prefabricated room units of a same floor together.