Abstract: With more and more adolescence sexual problems occurring，the social consensus on the urgency of sex education has been formed. Nowadays in china，sex education is mainly problem-oriented，rather than theory-guided. In this article，we compared the difference of sex education theories between America and China， aiming to find a suitable way of adolesccence sex education in future for China. Firstly，the current sex education theories of China were summarized，including sexual physiopsycholoy model，sexual moral model，and gender model. Secondly，the sex education theories of America were introduced. In America, there are two main theories, the comprehensive sex education and abstinence-only sex education. Some American experts surveyed and integrated these two theories recently，and found the more efficient theory of sex education, including the emotional regulation and "sexuality concept" expansion. In conclusion，the author suggestted that in China，self-actualization-guided sexuality education may be the trend.

Key words: Sex education, Psychosexual development, Morals, Humanism, Individuality