The type-Ⅱ censoring life test is a very important reliability test methods for the infrared detector assembly in space application.Considering the high vacuum requirements for the life test process of infrared component，a high vacuum system with multi-stations was designed.After structure design of the system and vacuum design of key parts were completed，the system was verified through experiments.Test results show that the no-load vacuum is up to 2.42×10-5Pa，which meets the requirement of 3×10-4Pa for space application of infrared detector assembly.