The present invention relates to a net knot structure for a mesh, in which two adjacent twisted yarns are connected with each other to form a net knot on a mesh. A knot part of a net knot, which is formed as a twisted yarn (first twisted yarn) and another twisted yarn (second twisted yarn) are connected, is stably prevented from being unknotted since a 1-1 yarn and a 1-2 yarn of the first twisted yarn and a 2-1 yarn and a 2-2 yarn of the second twisted yarn cross with each other while being combined firmly with each other, and thus, the present invention is capable of maintaining the function of a mesh.
