Abstract: The paper analyses ZPD theory in cognitive psychology and introduces it to college translation teaching from the perspective of interdiscipline. Identifying ZPD, teachers influence, interaction, cooperation, social communication of ZPD theory have a very crucial influence on learners. Through deep analysis, we can see there are very significant implications for teaching. According to the implications, the paper poses some reform ideas and teaching models on translation teaching. In addition, the author of the paper has done an empirical study and it shows that the influence of ZPD theory on translation teaching is remarkable.