Provided is a housing assembly and electronic device. The housing assembly may include a main body including side edge, and a metal frame including a bezel portion and a carrying portion. The bezel portion can be connected to the side edge and may cooperatively define an accommodating portion with the main body. The carrying portion being located in the accommodating portion and disposed along a connecting line between the bezel portion and the main body. The carrying portion may include a metal arm. A first groove being defined between the carrying portion and the bezel portion, a second groove being defined between the carrying portion and the main body, the first groove being connected to the second groove. The metal arm being configured to form an antenna radiator.