The core problem of invoking the limitation is that who can invoke the limitation to defense. Since Roman law.there iS a general principle that court can not take the initiative to invoke the statute of limitations.NOW,this principle has become widely accepted by western countries.However.the laws about invoking the limitation in our country are imperfect.By analyzing the invoking limitation system,comparing domestic and foreign issues on the limitation provisions invoked and discussing methods of invoking limitation system.the context obtained a conclution that only limita. tion system invoked by the parties.the people'S court shall not take the initiative to invoke.and made a number of leg. islative proposals