The invention provides a two-way stretch soil mass reinforcement grating and a manufacturing method thereof. The two-way stretch soil mass reinforcement grating comprises meshes, longitudinal bars andtransverse bars which are formed by stamping extrusion boards and conducting two-way stretch. The two-way stretch soil mass reinforcement grating is characterized in that the tensile strengths of thetwo-way stretch soil mass reinforcement grating in the longitudinal direction and the transverse direction are different, the ratio of the tensile strength in the high strength direction to the tensile strength in the low strength direction is 2:1-6:1, and the ratio of the cross sectional area of the bars in the high strength direction to the bars in the low strength direction of the two-way stretch soil mass reinforcement grating is 1:1-4:1. The tensile strength of the two-way stretch soil mass reinforcement grating in the high strength direction is 50 kN/m, and the tensile strength in the low strength direction is not lower than 10 kN/m. The mechanical performance of the grating product in the main stress direction in engineering application is greatly improved, and meanwhile, it is guaranteed that the grating product has proper mechanical performance in the secondary stress direction; besides, the torsional stiffness and mesh stability of the grating product are greatly improved, and thus the effect of reinforcing the base layer is improved.