The invention discloses a high-wear-resistant resin floorboard, which belongs to the field of building materials, and aims at solving the problems of poor wear resistant performance, moisture discharging difficulty and high manufacturing cost of the existing floorboard. The high-wear-resistant resin floorboard comprises a high-wear-resistant surface layer, a body layer and a bottom layer with a high heat insulation effect, wherein the body layer is positioned between the surface layer and the bottom layer; the surface layer, the body layer and the bottom layer are mutually bonded through bonding agents; a fixing groove is processed in one side surface of the resin floorboard; the side surface can be any one side surface; a positioning clamp post is processed on the side surface opposite to the side surface provided with the fixing groove; the fixing groove is matched with the positioning clamp post of the adjacent floorboard; micro liquid guide grooves in the height direction and the horizontal direction are processed in the fixing groove; the cross section of the micro liquid guide groove is in an arc shape; a layer of water absorption layer is arranged on the inner wall of the fixing groove; the water absorption layer and the fixing groove are connected in the bonding direction; open micro hole structures are formed inside the water absorption layer; water absorption resin is contained in the hole.