A battery cover assembly for coupling to a housing of an electronic device, the battery cover assembly comprising: a cover (10) comprising an inner surface (106) and a button slot (101) defined therein; a movable member (20) comprising a main body (21), a button (211) formed on the main body and extending through the button slot, and a catch assembly extending from the main body; and a fixing plate (30) coupled to the cover, with the movable member being sandwiched between the fixing plate and the cover, the fixing plate defining at least one opening, the catch assembly of the movable member extending through the opening and being adapted for engageably securing the cover assembly to the housing (40). The battery cover assembly has a steady structure. The battery cover assembly is convenient to open and close.