A shield cage assembly of the present disclosure comprises a metal shield shell and a heat dissipating module. The metal shield shell comprises a plurality of walls and an accommodating space defined by the plurality of walls, and the accommodating space has a front end port. The heat dissipating module is assembled to one of the walls of the metal shield shell, and the heat dissipating module comprises a heat dissipating base member, a first heat dissipating member provided to the heat dissipating base member and at least one clip sandwiched between the heat dissipating base member and the first heat dissipating member, and the clip engages with the metal shield shell, a bottom of the heat dissipating base member covers the wall of the metal shield shell to which the heat dissipating module is assembled.