Students have various motives for using various social media, one of which is TikTok. This study aims to explore the impact of using TikTok social media on the lifestyle of the millennial generation. A total of 20 students of the Islamic counseling guidance study program in the 2020 entry year in Banda Aceh. This research is a qualitative research with a thematic analysis approach. The research data were processed using NVivo Version 12 software. The research findings are categorized into two main themes: 1) The purpose of using TikTok social media (consisting of 3 subthemes: Entertainment, educational content, and new trends); 2) The impact of using Tiktok social media on student lifestyles (consisting of 2 subthemes: entertainment content, and negative and positive effects). This research implies that although TikTok has many educational benefits, it is important to understand and manage the negative impacts that may arise from its use.