The traditional curriculum evaluation ignores the role of students. "the evaluation subject is the government departments' evaluation of schools, the schools' evaluation of teachers, and the teachers' evaluation of students. The students are excluded from the evaluation subject and become the evaluation object forever. Compared with the traditional evaluation, growth record bag can reflect the important content in the process of students in learning and development, comprehensive study evidence, multi-angle to teachers, parents and students show the student's progress and change, put students in the main body status of curriculum evaluation, giving them the opportunity to fully participate in the evaluation, to show themselves, the students as the main, make the evaluation activity in a democracy, collaborative atmosphere, avoid the arbitrariness of evaluation and one-sidedness. In the evaluation of the growth record bag, students decide what kind of works to put in the record bag. Therefore, they have the opportunity to evaluate and reflect on their own works, timely judge the quality of their own learning, and fully mobilize the enthusiasm and initiative of learning. The growth record bag evaluation method provides the reference basis for students' self-evaluation. The process is as follows: make students participate in evaluation → collect evaluation data → design evaluation tools → observe and analyze student development → interpret data → make evaluation. Curriculum evaluation must respect students as the basic premise, and actively adopt and implement students' self-evaluation, so that evaluation becomes a means for students to know, develop, manage and motivate themselves. Students and teachers are equal subjects of evaluation. On the basis of mutual trust and cooperation between teachers and students, students can form a benign interaction between students and students, and between teachers and students, to promote the common development of both sides. Teachers give feedback to students with positive and pertinent evaluation information, so that students affirm their progress and establish self-confidence on the one hand; on the other hand, students are willing to accept and make efforts to improve their learning shortcomings modestly. Teachers should pay attention to the communication and evaluation between students, so that students learn to appreciate others and accept themselves in the process of mutual evaluation, and form a positive and healthy attitude. Equalized and democratized teacher-student communication also enables teachers to get more authentic feedback from students. Through analyzing these information, teachers can understand the quality of students' development and timely find problems existing in the current curriculum, so as to make reasonable course decisions and effectively improve the curriculum.