Abstract: Based on the four oral tests of a non-English major female student , and taking CET-4 as the scoring standard, this paper conducts a 16 week teaching practice of cooperative evaluation between teachers and students in this class. Through the qualitative analysis of the interviews with the girl, her classmates and the examiner, the results show that the cooperative evaluation can effectively improve the performance of English learners in oral English, especially in grammar, vocabulary and coherence.

Key words: Evaluation of teacher-student cooperation, Qualitative research, Oral teaching, Non-english major, Improvement of oral English