The written notice of court hearing has been added in 2003 in article 67-1 of Taiwan Code of Civil Procedure. If the third person doesn't attend the proceedings after the notice, the legislator regulates the effect of the intervention between the supported party and the noticed third person. Furthermore, this amendment raises the following important academic issues, whether res judicata and issue preclusion after the notice by court can occur between the another party and the intervener and whether article 63 can be regarded as a fundamental provision of above effect. The new proceeding, Third-Person Opposition Proceeding, is in the Innovation of 2003 introduced into the Taiwan Code of Civil Procedure. In cases where a third person who is legally interested in an action and didn't attend the proceedings due to reasons not imputable to himself, such third person may bring an opposition action against that final and binding judgment to seek the revocation of the portion of such judgment prejudicial to him. It is necessary to make the detailed study, whether the standings of plaintiff and defendant in the third person opposition proceedings are adequate. The aim of the essay is to clarify the requirements and effects of intervention, notice of action, notice of court hearing and the relation between them and res judicata as well as issue preclusion and further to establish the provision of notice of court, which protects the third person's right to a court hearing, and the proper remedial procedure against the infringement of the above right.