Abstract: The double voussoir injection forming machine adopting a mechanism of double voussoir hydaulic injection, doubles its efficiency and lowers its power consumption by 14.5 kW,and saves cost of ￥26 000 RMB. It is featured with high efficiency and low power consumption ,and as a result, awarded the International Excellent Patent Prize. The Patent was writen in Chinese, English and Japenese, and published worldwide.