The invention discloses a square cell module including a plurality of square cell monomers, a plurality of cell electrically conductive connection pieces and a module frame. The square cell module is characterized in that the module frame includes two module end plates, two module fixing steel angles and a module top beam; the module end plates are square flat plates, and two corners of the lower end of each square flat plate and the middle part of the upper end of each square flat plate are each provided with an end plate riveting through hole; end parts of two ends of each module fixing steel angle are each provided with a steel angle riveting through hole; end parts of two ends of the module top beam are each provided with a top beam riveting through hole; the module fixing steel angles and the module top beam are respectively connected with the module end plates in a riveting mode, and thus the plurality of square cell monomers are accommodated and fixed. The square cell module provided by the invention has the advantages of simple structure, high space utilization rate, high universality, and convenient installation and transport, and is suitable for scaling and mechanized production; and the grouping production efficiency of the cell module can be improved, and the production cost is reduced.