Adolescent girls in Batang, Central Java tend to consume excess fat as much as 81.5%. A factor that influences fat intake is food labeling. Particularly the information regarding the fat value of food products. Based on a survey by the Consumer Protection Agency, only 7.9% of consumers in Indonesia read food labels. This study aims to analyze the influence of high-fat food labelings on food selection attitudes, snacking patterns, and food purchase intentionss in adolescent girls. This study was the Quasi-Experimental method of Time Series Repeated Treatment Design which was conducted at SMP N 1 Reban. The sample of this study consisted of one group with three data collection times and food label interventions with three categories, namely red color for high-fat foods, yellow for medium-fat foods, and green for low-fat foods. A total of 39 respondents, consisting of 9th grade students aged 13-15 years with sample size calculations using the Lameshow formula. Snacking patterns were measured using the SQ-FFQ questionnaire, and food selection attitudes and food purchase intentions were measured using a questionnaire. Data was analyzed by the Friedman test. The results: There was an influence of high-fat food labeling on snacking patterns (p-value 0.000), food selection attitudes (p-value 0.000), and food purchase intentionss (p-value 0.000) in adolescent girls. Conclusion: there was a significant influence of high-fat food labeling on snacking patterns, food selection attitudes, and food purchase intentionss in adolescent girls.