D Dysmenorrhea is the most common gynecological disorder in women such as feelings of pain during menstruation and may be severe enough to affect daily life in 15-60% of teenagers. Dysmenorrhea is verified to be primary dysmenorrhea and secondary dysmenorrhea. The incidence of primary dysmenorrhea is found to be high in students with one factor lacking physical activity or exercise habits. To be able to understand and examine the relationship between exercise habits and the incidence of primary dysmenorrhea in female students, it is necessary to conduct a study aimed at reducing the prevalence of primary dysmenorrhea in adolescent girls in vocational schools. This study was an analytic observational with cross sectional study design, which was conducted to vocational school students from class X-XII with a sampling technique using a random sampling system so that there were 202 samples of students who had been distributed in the research questionnaire. Data analysis used univariate analysis and bivariate analysis using Chi Square with the help of Statistics Program for Social Science (SPSS) for Windows version 21.0. Results of the study conducted 1) The relationship between exercise habits with the incidence of dysmenorrhea has a p value = 0.989> 0.05.2) The relationship between BMI and dysmenorrhea has a value of p = 0.034 <0.05. 3) The relationship between age of menarche and dysmenorrhea has a value of p = 0.809> 0.05. This study can be concluded: 1) exercise habits do not have a significant effect on primary dysmenorrhea in vocational school students, 2) Body Mass Index (BMI) has a significant effect on primary dysmenorrhea in vocational school students, 3) age of menarche does not have a significant effect against primary dysmenorrhea in vocational school students.