such as dizziness, fatigue, sweating, backache, headache, nausea, vomiting and diarrhea all occur before or during menstruation. Tomatoes contain lycopene, iron, potassium, calcium, vitamins A, B, D and G which function to relieve pain. The purpose of this study was to determine the effect of giving tomato juice on reducing dysmenorrhea pain in adolescent girls at SMPN 2 Pariaman. The research design used quasi-experimental. The study was conducted at SMPN 2 Pariaman on August 5-21, 2024. The study population of adolescent girls who experienced dysmenorrhea pain at SMPN 2 Pariaman amounted to 32 people. The research sample amounted to 15 people with accidental sampling data collection techniques. The research instrument was a numeric rating scale (NRS) observation sheet. The results of the study showed that there were 12 people (80%) out of 15 respondents was moderate before being given tomato juice and there were 14 respondents (93%) who experienced a decrease in mild pain levels after being given tomato juice. The results of the Wilxocon test obtained a p-value = 0.001 <α = 0.05. This means that the administration of tomato juice has an effect on reducing the intensity of pain in adolescent girls at SMPN 2 Pariaman. It can be concluded that the administration of tomato juice has an effect on reducing dysmenorrhea pain in adolescent girls at SMPN 2 Pariaman. The researcher's suggestion is that the results of the study can be used as an alternative choice of non-pharmacological therapy for adolescents who experience dysmenorrhea.