A cutting mechanism for fibre roll products, comprising: a first clamping device comprising: a first seat, a first connecting unit connected to said first seat, and a first clamping unit connected to said first connecting unit for clamping a fibre roll product; a second clamping device comprising: a second seat, a second connecting unit connected to said second seat, and a second clamping unit connected to said second connecting unit for clamping said fibre roll product, wherein said second clamping device is disposed adjacent said first clamping device, such that a gap is provided between said first clamping device and said second clamping device; a blade movable into said gap for cutting said fibre roll product; a feeding unit for feeding said fibre roll product from said second clamping device to said first clamping device; and a push-pull device comprising a first push-pull unit and a second push-pull unit respectively connected to said first seat and said second seat, wherein said first push-pull unit and said second push-pull unit are operable to displace said first clamping device and said second clamping device to adjust the size of said gap, characterised: in that said first connecting unit is connected to said first seat via a first shaft; in that said second connecting unit is connected to said second seat via a second shaft; and by a push device comprising a first push unit and a second push unit respectively connected to said first connecting unit and said second connecting unit, and respectively operable to cause said first connecting unit and said second connecting unit to rotate on said first shaft and said second shaft relative to said first seat and said second seat. a first clamping device comprising: a first seat, a first connecting unit connected to said first seat, and a first clamping unit connected to said first connecting unit for clamping a fibre roll product; a first seat, a first connecting unit connected to said first seat, and a first clamping unit connected to said first connecting unit for clamping a fibre roll product; a second clamping device comprising: a second seat, a second connecting unit connected to said second seat, and a second clamping unit connected to said second connecting unit for clamping said fibre roll product, wherein said second clamping device is disposed adjacent said first clamping device, such that a gap is provided between said first clamping device and said second clamping device; a second seat, a second connecting unit connected to said second seat, and a second clamping unit connected to said second connecting unit for clamping said fibre roll product, wherein said second clamping device is disposed adjacent said first clamping device, such that a gap is provided between said first clamping device and said second clamping device; a blade movable into said gap for cutting said fibre roll product; a feeding unit for feeding said fibre roll product from said second clamping device to said first clamping device; and a push-pull device comprising a first push-pull unit and a second push-pull unit respectively connected to said first seat and said second seat, wherein said first push-pull unit and said second push-pull unit are operable to displace said first clamping device and said second clamping device to adjust the size of said gap, characterised: in that said first connecting unit is connected to said first seat via a first shaft; in that said second connecting unit is connected to said second seat via a second shaft; and by a push device comprising a first push unit and a second push unit respectively connected to said first connecting unit and said second connecting unit, and respectively operable to cause said first connecting unit and said second connecting unit to rotate on said first shaft and said second shaft relative to said first seat and said second seat. in that said first connecting unit is connected to said first seat via a first shaft; in that said second connecting unit is connected to said second seat via a second shaft; and by a push device comprising a first push unit and a second push unit respectively connected to said first connecting unit and said second connecting unit, and respectively operable to cause said first connecting unit and said second connecting unit to rotate on said first shaft and said second shaft relative to said first seat and said second seat.