Aiming at the problem of multi-objective optimization, put forward the test optimization selection method under unreliable test conditions. Through analyze the test optimization selection process, establish the math model of multi-objective optimization. Use maximum likelihood estimation method to acquire the failure test sample parameter information, and adopt E-dominant multi-objective particle swarm optimization algorithm to select optimization solution. Use certain type radar assembly test to verify the algorithm validity and availability. The results show that the test selection scheme can take into account all factors and pay attention to the miss detection rate factor.