As network education gains rapid popularization at present, the quality of network education has been given wider attention by the whole society. To tackle the above question, the author points out that all activities of network education should be focused on students' all-around development. Students are not only the main body of all educational activities, but also the carriers of the entire education quality. If we can discover their individual differences and characteristics in their studies, and if we can carry out scientific and effective appraisal of their learning process and effects based on the above study, then the quality of distance education can surely be guaranteed and improved. Thus the following article analyzes the characteristics of learning appraisal in network education and points out that in network education the evaluation of students should combine quantification and non-quantification. Therefore, we have designed a comprehensive evaluation system for the evaluation of students, together with our suggestions on the improvement of the evaluation system, which can be applied to network education in multiple subjects based on the present situation of network education development in the international educational cooperation project of Ningbo Dahongying University.