In traditional translation teaching mode, most teachers still adopt the traditional teaching methods. First, teachers ask students to translate a paragraph, and then teachers make comments on students' translations. At last, teachers provide the final standard translation of this paragraph [3]. This kind of teaching mode causes low efficiency of translation teaching. Since students are psychologically in a passive position, they cannot take the initiative to actively participate in the translation teaching. And because the comments and standard translation are given by the teacher, students and the teacher lack in necessary discussions and exchanges, which is not conducive to arousing enthusiasm of students and makes translation classes dull and boring, and the teacher greatly suppresses the creative thinking of students, which is not beneficial to cultivate and improve their translation competence [4]. As a result, translation class can't reach the original teaching goal, translation level of students can't increase greatly and satisfy the practical needs.