The utility model relates to a finished roll hanging weighing support frame which comprises a bottom plate,an electronic platform scale,a bottom frame,guide rails,slide seats,support seats and an adjusting mechanism.The electronic platform scale is placed on the bottom plate,the bottom frame is installed on the electronic platform scale,two guide rails are installed on the bottom frame in parallel and separately,four slide seats slide with the guide rail,two support seats cross the guide rail and are fixed with the slide seat for sliding on the guide rail.By adjusting the adjustment mechanism on the bottom frame,the distance between the two support seats can be changed.The advantage of this device is that it can avoid foil surface indentation when electrolytic copper foil is weighed,it is suitable for weighing electrolytic copper foil finished rolls of different widths,and it is very convenient to operate.