Abstract: Objective To analyze the correlation between condom use in the first sexual behavior and the occurrence of sexual behavior and condom use in the past year among students in technical and vocational schools, and to provide reference for targeted sexual health education and HIV/AIDS prevention and control measures. Methods Based on the survey of HIV/AIDS knowledge, behavior and self-testing service needs of young students in Guangdong Province in 2022, an anonymous survey was conducted among students from 10 technical and vocational schools in Guangdong Province. The information about condom use in the first sexual behavior and sexual behavior in the past year was collected. Univariate and multivariate unconditional logistic regression analysis were used to analyze the situation of condom use in the first sexual behavior and the dependent variables. Results A total of 2 173 students who had sexual experience were included in this study. Among them, 1 573 （72.4%） students used condoms at their first sexual intercourse. A total of 1 895 （87.2%） students had penetrative sex in the past year, and the rate of condom use was 69.9% （1 325/1 895）. After adjusting for demographic factors, multivariate analysis showed that students who used a condom for the first sexual behavior were less likely to use substance abuse （OR=0.23）, and were more likely to engage in sexual activity in the past year （OR=1.72） and engage in sexual activity with a regular partner （OR=1.72）. And, they were more likely to use condoms every time they had sex （OR=10.10）, with a regular partner （OR=12.06）, with a casual partner （OR=8.95）, and with a commercial partner （OR=8.76） in the past year. Conclusions The rate of condom use in the first sexual behavior among technical and vocational school students in Guangdong Province is higher than that of the young students in the whole country, but still lower than that of school students in our province. Good first sexual behavior habits can promote students to choose regular sexual partners and adopt safety measures. Technical and vocational schools need to provide higher quality sexual health education to protect students’ sexual health.

Key words: Technical school, Vocational school, Sexual behavior, Condom, Multiple sexual partners, Acquired immune deficiency syndrome