A housing assembly, a method for manufacturing the housing assembly, and an electronic device are provided according to the present disclosure. The housing assembly includes a housing body and a flexible film layer. The housing body has a bottom portion and at least one side wall connected with an outer edge of the bottom portion, and each of the at least one side wall and the bottom portion cooperatively define a bending angle larger than 70 degrees. The flexible film layer is disposed on a first surface of the housing body, and the flexible film layer has an elongation at break higher than or equal to 150%.