The utility model provides a pair of a pretightning force tooth connection type ground tackle for combined material board, combined material board, the metal anchor clamps of annular threaded tooth are equipped with including the tip, metal anchor clamps middle part is equipped with the combined material card slot, be equipped with in the combined material card slot with combined material board tip annular threaded tooth complex tooth, the combined material card slot includes bellying and depressed part, the bellying surface is equipped with the skid resistant course, the depressed part surface is equipped with the wearing layer, the lower bottom surface and the length preceding, back both sides face of metal anchor clamps are greater than the length of bottom surface. This ground tackle simple structure, convenient to use, low cost bears the weight of the dynamic height, connects efficiently, the utility model discloses passing through tooth assembly back with metalwork and combined material board, applying radial pressure through certain method on the combined material tooth, the frictional resistance on rethread combined material toothed root portion interlaminar shear resistance ability and the contact surface transmits external load jointly to reach the mesh of anchor combined material board.