民事诉讼活动中,法官面临着如何理解及适用抽象性规范“正当理由”的问题。“正当理由”主要功能在于保障民事诉讼活动的有效进行。从当事人的角度来看,“正当理由”是削减司法公权的利器。“正当理由”的内涵有二:一是道德性理由;二是规范性理由。法官在适用“正当理由”时负论证义务。 In civil litigation activities, judges face the problem of how to understand and apply abstract norms “justification ”. “Justification ” The main function is to protect the effective conduct of civil proceedings. From the perspective of the parties, “justification ” is a weapon to reduce the public judicial power. “Justification ” There are two connotations: one is the moral reason; the second is normative reasons. Judges bear the burden of proof in applying the “justification”.