Abstract: With the increasing application of simulation technology in various fields, users have put forward higher requirements for the credibility of the simulation system. This paper focuses on some key issues of the credibility evaluation of the simulation system, such as the unclear expected application, the incomplete evaluation, the unclear evaluation criteria, and the open loop of evaluation conclusions. From the perspectives of comprehensive implementation of credibility assessment, strengthening the design of acceptability standards, and focusing on the evaluation of closed-loop implementation, how to solve the real problem has been studied and discussed. The research results of this paper are universal. It can effectively guide the planning, organization and implementation of the credibility evaluation work for various simulation systems, which have important significance for improving the operability and actual effect of the evaluation of simulation credibility.

Key words: simulation, credibility, VV&A (Verification,Validation and Accreditation), V & V (Verification and Validation), acceptability criteria