On the basis of practical teaching and leading innovation theory, this paper explores the necessity and importance of self- andpeer assessment in the teaching to non-English majored college students. It is characterized with learner-centre and group work, the sub-ject evaluation which takes formative assessment as a main method in order to promote the enthusiasm and initiatives of students' learningas well as improve the teaching effect. The research shows that Self- assessment improves Ss' independent learning skills, peer assessmentgroup work help students in active learning, self- and peer assessment motivate students' English learning. In a comparison of other classeswhich aren't involved in this innovation, the group of freshmen know better about their learning outcome in an objective manner and canimprove their method of English learning. Over all, the project can train students' ability to solve problems independently, and raise theirlanguage communicative competence gradually.