The invention discloses a floating point grid network for crack resistance of a concrete surface layer. The floating point grid network comprises a fiber grid network body, an impregnating resin layer, and a plurality of floating point structures, wherein the fiber grid network body is formed by a plurality of warps and a plurality of wefts in an intersecting mode; the impregnating resin layer is formed on the surface of fibers through impregnating treatment; the multiple floating point structures are formed at the intersections of the warps and the wefts of the fiber grid network body and are identical in heights. The floating point structures protrude from the upper surface of the fiber grid network body, and each floating point structure is big-end-down and is in a conical shape. The fiber grid network body is a bidirectional orthorhombic isotropic grid network body which is manufactured with alkali-resisting, corrosion-resisting and rusting-free light high-strength fiber materials as base materials. High tensile strength and high crack resistance of the light high-strength fibers are sufficiently utilized, the floating point structures with uniform thicknesses are manufactured at the intersection points of the warps and the wefts through a mold by means of resin impregnating, in this way, the fiber fabric which is too soft can be converted into a rigid grid network material, and meanwhile, the depth of the portion, buried into the concrete surface layer, of the floating point grid network is controlled through the floating points.