This article discusses the concept of burden of proof and prima facie case, respectively, in WTO dispute settlement based on the legal doctrine on burden of proof in Chinese law.From the perspective of Chinese law, burden of proof consists of three meanings on two levels, namely behavior burden of production and behavior burden of persuasion in the procedural sense, and result burden of bearing unfavorable consequence in its substantive sense.A prima facie case also includes the weaker account and the stricter account.They do not mean the same thing in every context, but what is the exact meaning thereof in a given context is clear.The real confusion of burden of proof in WTO dispute settlement is prima facie standard which, in practice, to some extent, relies on the determination of a panel on the basis of case to case.