In the context of THE COVID-19 epidemic, in order to effectively carry out the “no school, no school” online teaching, clearly understand the current situation and existing problems of high school students' online teaching. In the survey, it is found that there are some problems, such as the weakening of students' learning guidance, commitment and concentration, and the poor learning environment and independent learning ability. Along with the network teaching in the high school education application scope gradually expands, some problems also gradually appear, therefore must take the reasonable countermeasure, enhances the teaching quality.