【裁判要旨】交易习惯是指平等民事主体在民事往来中反复使用、长期形成的行为规则。这种规则乃约定俗成,虽无国家强制执行力,但交易双方自觉地遵守,在当事人之间产生权利和义务关系,故交易习惯可以作为法院定案的依据。 The purpose of the referee Transactional practice refers to the repeated use of equal civil subjects in civil transactions, the formation of long-standing rules of conduct. This kind of rule is a common practice. Although there is no national enforcement power, both parties to the transaction conscientiously comply with each other and create rights and obligations between the parties. Therefore, the trading habits can serve as the basis for the court’s verdict.