In this study, 200 questionnaires and structured interview samples were collected nationwide from students, parents, and teachers in three perspectives: personal identification information, personal experience of sex education and the level of knowledge about sex education. The data from the questionnaires and the results of the structured interviews were combined to analyze and summaries the general characteristics of the current situation of sex education among high school students: high school students, their parents and teachers are to a large extent aware of the importance of sex education and are eager to obtain relevant knowledge through the school, but the knowledge provided by the school is often limited and does not fully meet the needs of high school students; the sources of sex knowledge for high school students are mainly The attitude of high school students towards sex-related topics has changed considerably from the previous surveys conducted by scholars, with most of them being able to face up to their own physiological demands and discuss sex-related topics with others openly; however, even so, the vast majority of respondents still think that sex education is not being implemented, and the sex education curriculum is far from the national standard. Even so, most respondents still believe that sex education is not being implemented and that the curriculum is nowhere near the level required by the state. The reasons for the current situation of sex education include: school reasons, the concept of sex education has not kept pace with the quality of education, the lack of professional resources for sex education teachers and sex education materials in schools; family reasons, some parents have old-fashioned ideas, lack of correct understanding of sex education, do not attach enough importance to sex education, parents generally lack comprehensive scientific knowledge of sex, parents and children lack of communication; social reasons, the government lacks regulation of undesirable cultural factors and the relevant policies are not comprehensive.