The invention discloses a 90-degree fibre cord fabric cutter which is in an L shape integrally and comprises an unwinding device, an input device, a cutting device, a cloth puller, a fabrie joining device, a lapping device, an output device and a winding device. The cutting device on the 90-degree fibre cord fabric cutter adopts a guillotine manner, thereby ensuring high production efficiency andcutting precision. In addition, the cloth puller, the fabrie joining device and the lapping device act simultaneously and are matched organically, thereby improving the production efficiency by 2.5 times than the prior art, i.e., 20 times of cutting and lapping can be performed per minute, and the positioning precision is high so that the quality and the production efficiency of the product are improved. Furthermore, the cutter can cut the fibre cord fabric having an angle of 90+/-5 degrees, thereby having wide application range and reasonable structural design.