The invention discloses an anti-weed mat and a processing technique thereof. The invention aims to solve the problem of poor anti-weed effect of a traditional anti-weed mat. According to the technical scheme, the anti-weed mat comprises a bottom layer and a surface layer, wherein a spunbond non-woven fabric made from dacron is arranged on the bottom layer; a needle punched non-woven fabric made from dacron is arranged on the upper layer; a high-pressure low-density polyethylene material is arranged between the bottom layer and the surface layer; the bottom layer and the surface layer are connected with each other through the high-pressure low-density polyethylene material; the grain size of the high-pressure low-density polyethylene material is below 40-mesh; the high-pressure low-density polyethylene material is uniformly distributed between the bottom layer and the surface layer; the quantity of the high-pressure low-density polyethylene material is 25-35g/m<2>; the density of the bottom layer is 135-180g/m<2>; the thickness is 0.4-0.6mm; the thickness of the surface layer is 1.5-2.5mm. The anti-weed mat disclosed by the invention has an excellent anti-weed effect.