The present invention relates to a lattice type wall heat insulation formwork forming machine which comprises a feeding injection mechanism, a forming mold, a mold opening/closing mechanism and a conveying mechanism. The feeding injection mechanism is hanged on the rail at the upper part of frame through the running wheel of a feeding actuating mechanism, wherein an injection cavity is positionedat left side. An injection cylinder is installed in the cavity. A compression mold is installed on the bottom surface. A feeding cavity which is integrated with the compression mold is provided at the right side. The forming mold is corresponding installed below the injection cavity. The forming mold is fixedly connected with a tilting shaft. The tilting shaft is placed on the bearing support of support frames at two side of forming mold through bearings at two sides. The tilting shaft is connected with the belt pulley at the output end of tilting motor. The mold opening/closing mechanism is installed at the frame below the forming mold. The lattice type wall heat insulation formwork forming machine of the invention has the advantages of high production efficiency, high pass rate of product, quality satisfied to the related technical standard, environment protection, energy saving, no consumption of land resource and reduced production cost.