Aim: Defining a specifics of sex life and methods of birth control among students at the University of Osijek using a new formed questionnaire that focuses on sex, year of study (first two or last three years of studies), relationship status and residence (village or city). Study type: cross-sectional study Patients and methods: Research includes 549 voluntarily students, 421 female (76,7 %) and 128 mail (23,3%). These students study at Faculty of Electrical Engineering, Computer Science and Information Technology Osijek and at Faculty of Education Osijek. The used method is new formed questionnaire with 31 questions. Results: 54,3% of students that were questioned had first sexual experience between 16 and 18. A lot of them are in long-term relationships. When they are choosing a sex partner, for men is significantly more important criteria physical appearance, and for women sensibility and partners support. 71,9 % of students that were questioned are using some of birth control methods, most common is condom (75,9 %) and birth control pills (23,3 %). The reason for not using a birth control for 50% of students is long-term relationship and confidence that comes with it, and 27,9 % of students have opinion that natural methods of birth control are safe enough. Long-term couples are menaging better with sexual activities then students that are in short-term relationships. Also, the students that are in short-term relationships are more stressed because of their studies. Students who are not sadisfied with their looks less often (are not at all) have sexual intercorse in relation to students who are not sadisfied with their looks. Conclusion: There are not big differences in age of beginning a sexual life between students considering sex, year of study and residence. Most often birth control method is condom, and next are pills. The bigest reason for not using contraception is long-term relationship in which students are not feeling fear of sexually transmitted diseases and possible pregnancy. Most of the informations about the birth control students are becoming in school. Self-esteem and confidents based on their appearance are very important for developing their sexuality.