The missile weapon system often needs a lot of simulation test during the R&D test. Because people have doubts about using the simulation model instead of the physical credibility, it is often necessary to evaluate the reliability of the simulation results. Missile simulation results of the credibility of the assessment is a very important part of an effective assessment of data credibility can shorten the missile weapon system development cycle, cost savings. This paper summarizes the main theoretical methods and research and development direction of the reliability evaluation of missile simulation data at home and abroad. This paper analyzes the gap between China’s missile simulation data evaluation and foreign countries, and puts forward some suggestions on the future research and development of missile simulation data point of view.