The invention discloses a high-strength paper-making net. The high-strength paper-making net comprises an intermediate polyester net layer, wherein steel mesh reinforcing layers are symmetrically arranged on two sides of the polyester net layer, the exterior of each steel mesh reinforcing layer is coated with a filter layer, and the exterior of each filter layer is coated with an anti-aging layer;each filter layer comprises two layers of polyethylene meshes, and a semi-permeable membrane is arranged between the two layers of polyethylene meshes. The high-strength paper-making net has novel design and a reasonable structure, the structural strength of the paper-making net is improved, and meanwhile the resistance to ultraviolet radiation of the paper-making net is enhanced, so that strength decrease caused by aging of the paper-making net is avoided, and the service life is improved greatly.