Abstract: From the beginning of the Roman law,the plaintiff qualifications in public bene fit litigation had not adopted simplification, initiating public prosecution by the direct relation person,but diversification,namely"diversification of the plaintiff qualifications" mode. In order to enhance procedure protection of th e public benefit litigation parties,if the citizen or association of no direct relation initiates public benefit prosecution, the attitude of many nations is encouragement and support. But the law carries on some restrictions to the plain tiff,too. In the construction mode of public benefit litigation plaintiff syste m, many countries choose the mode of legislation,but some other countries choos e the mode of Judicial Precedent Law or mode from Judicial Precedent to legislat ion.