AS site environment of the shock parameters test was quite poor. A high performance trigger controller based on FPGA is designed to improve the reliability and stability. Based on the independent components and FPGA, two sets of trigger controllers are designed. And parameters are designed according to the testing requirements of explosion. The advantages including stability and reliability which brought by using FPGA are analyzed. The results show that the synchronization time of the trigger controller based on FPGA is less than 50ns under the condition of extreme temperature, and the error trigger rate is 0, which has higher stability and reliability.