Abstract: Article 87 and Article 88 of CMI are the basic rules of carrier's lien on cargo. The law empowers the carrier to lien the cargo and it also stipulates the procedure. But in practice, Articles 87 and 88 in CMI have given rise to ma ny problems. This paper studies the Articles 87 and 88 of CMI, analyses the cond itions under which the carrier liens the cargo, and gives solutions to the probl ems arisen under the law, moreover, the article also gives some suggestions abou t the amendment of Articles 87 and 88 of CMI.