The invention discloses a square and round bale dual-purpose type twining film wrapping machine. The square and round bale dual-purpose type twining film wrapping machine consists of a machine frame, a motor, a belt drive, a power input shaft, a clutch, a worm gear worm reducer, a rotating tower, a clutch control mechanism, a film control mechanism, an autorotation actuating unit, an axial unloading cup, a film straining mechanism and travelling wheels. The machine can be used for ensiling film wrapping of a round bale and a square bale, realize the whole stretch film sealing wrapping of bales and fermented feed, and is ideal equipment which realizes high-quality ensiling and micro-storage of forage grass; dual purposes are the greatest advantage of the machine; the twining film wrapping machine can also be applied to the whole stretch film sealing wrapping of cylindrical and square packed objects in other industries to facilitate storage, transportation and turnaround of packed products and goods and play a role in preventing dust and protecting against the tide and keeping clean, improving packing level, reducing transportation loss and packing cost and the like, so that the technical problem of wrapping the square objects is solved, generality and the utilization rate of equipment are greatly improved and the manufacturing cost and using cost of the equipment are reduced.