The invention relates to a synthetic mold shifting two-plate type closing machine. The synthetic mold shifting two-plate type closing machine comprises a lower seat, an upper seat and a lower mold shift-out seat, wherein pull rods are vertically mounted at four top corners of the lower seat, the four pull rods are connected with the upper seat in a sleeving and sliding manner, quick oil cylinders connected with the lower seat are mounted on the outer sides of the top corners of the upper seat, brake nuts are mounted at the connecting parts of the upper ends of the upper seat and the pull rods, two brake nuts on two sides are connected through a brake synchronization device, a lower mold shift-out seat and a turnover mold plate shift-out seat are respectively mounted on two adjacent side edges of the lower seat, a moving lower mold plate and a turnover mold plate moving seat are respectively mounted on the lower mold shift-out seat and the turnover mold plate shift-out seat in a sliding manner, and a plurality of high pressure mold locking cylinders are vertically mounted inside the lower seat. The two-plate type closing machine provided by the invention dispenses with a traditional three-plate type structure, the height of a machine body is lowered, the cost is lowered, and a flexible mold closing structure is added, so that pressure among mold parting surfaces is even.