P Primary dysmenorrhea is menstrual pain whose symptoms include cramping in the lower abdomen, with mild to severe intensity. Previous studies have shown that primary dysmenorrhea is most prevalent in adolescents, with prevalence reaching 90%. Primary dysmenorrhea is influenced by a variety of factors, one of which is junk food, which is the food consumed by teenagers. The purpose of this study was to determine the relationship between the frequency of consumption of junk food with the intensity of primary anemia in female students at SMAN 47 Jakarta. This study used an observational analytic design with cross-sectional methods on students of class X, XI, and XII at SMAN 47 Jakarta. Data is collected by anthropometric measurements and questionnaires about individual characteristics such as menstrual patterns, history of dysmenorrhea, and frequency of consumption of junk food. Data analysis using SPSS version 20.0 and significance level of 0.05. From the results of the study with 167 respondents, Chi-square and KolmogorovSmirnov analysis showed no relationship between the frequency of junk food consumption (p = 0.875), menstrual length (p = 0.352), and Body Mass Index (p = 1,000) with the intensity of primary dysmenorrhea. There was a relationship between age of menarche (p = 0.003) and the intensity of primary dysmenorrhea. There is no relationship between junk food consumption habits and the intensity of primary dysmenorrhea.