Prefabricated shear wall system and construction method thereof

The invention relates to a prefabricated shear wall system and a construction method thereof. The prefabricated shear wall system comprises a prefabricated outer wallboard, a prefabricated inner wallboard, a prefabricated floor slab and a steel beam. The outer wallboard and the inner wallboard are connected to form a shear wall; the steel beam is connected with a steel beam section prefabricated on the shear wall built-in steel plate in advance, and the floor slab is arranged on the steel beam section and is in lap joint with the shear wall. According to the prefabricated shear wall system, the outer wall plate, the inner wall plate and the floor plate are prefabricated and formed, so that the construction operation of the prefabricated shear wall system can be conveniently completed by assembling on site, and compared with the mode of pouring and forming the outer wall plate, the inner wall plate and the floor plate on the construction site, the prefabricated mode is adopted, so that the ...