Synthesis press for diamond

The invention relates to the technical field of diamond production, in particular to a synthesis press for diamonds, which comprises a bottom mounting seat and is characterized in that a synthesis machine four-cavity body assembly is fixedly mounted on the bottom mounting seat, hydraulic telescopic columns fixedly mounted on the bottom mounting seat are arranged on two sides of the synthesis machine four-cavity body assembly, and the hydraulic telescopic columns are fixedly mounted on the bottom mounting seat. A stroke pressure assembly is rotationally connected between the two hydraulic telescopic columns, air inlet valve bodies are arranged on the front side and the rear side of the synthesizer four-cavity body assembly, and a pressure relief valve body with the same internal structure as the air inlet valve bodies is arranged on one side of the synthesizer four-cavity body assembly. According to the synthesis press for the diamond, high temperature and high pressure caused by movement of the earth crust in