This study aims to increase student interest in reading at SMK Pasundan 1 Serang City Class XI Multimedia 1, the use of electronic teaching media based on the flip builder application is made using the flip builder application. This study used qualitative descriptive research by observing students' reading interest levels and using data collection procedures in the form of observation, interviews, and documentation to check the validity of the data using data triangulation with the stages of source technique, time technique, and data technique. Based on the results of observations in this study, the use of electronic teaching media based on the flip builder application to increase students' reading interest, it can be concluded that electronic teaching materials using applications based on the flip builder application can be said to have increased in terms of students' reading interest.