The invention discloses an entire yarn cutting system of a warp knitting machine. The entire yarn cutting system comprises a bearing seat, a scissor tube seat, a yarn hooking device, a needle selection jacquard, an upper cutter and a lower cutter; the bearing seat is located under the scissor tube seat; the right side of the scissor tube seat is connected with the yarn hooking device by use of a needle bed erection support and a crochet needle bed; the yarn hooking device is connected with the needle selection jacquard and driven by a crochet needle driving device; the upper cutter is matched with the lower cutter; the upper cutter is driven by a transverse shifting driving mechanism, while the lower cutter is driven by an angle adjusting mechanism; a yarn absorbing tube, which is communicated with the scissor tube seat, is further arranged on the yarn hooking device. The entire yarn cutting system of the warp knitting machine has the beneficial effects that the yarn hooking device is reasonable in design and stable in structure, and used for hooking excessive yarn ends, and then the upper cutter and the lower cutter are used for cutting off the yarns when the warp knitting machine works so that elastic or non-elastic lace fabrics having independent steric effect can be obtained, and as a result, the product quality is improved and the production efficiency is improved.