Today's Social media platforms have become an integral part of Generation Z's lives, profoundly shaping their personality development. Teenagers born between 1996 and 2010 are very closely related to technology. Every year the number of people using at least one social platform increases. This study explores the multifaceted influence of social media, highlighting both its potential to empower self-expression, community building, and social awareness, and its capacity to fuel comparison, anxiety, and an unhealthy dependence on external validation. Critical characteristics of friendships, including validation, self-disclosure, and companionship, and instrumental support, can occur in equally effective and satisfying ways offline and online. By understanding these contrasting effects, we can encourage Gen Z to leverage the positive aspects of social media for self-discovery and connection while mitigating the potential for negative impacts on their developing personalities. The effects of social media platforms on Generation Z in personality development which is confirmed by p-values for six opinions by the Chi-Square test, are 0.0233, 0.024, 0.026, 0.01656, 0.007, and 1.05E04. For statistical Analysis, I used ORIGIN 2019 software. Research gaps in social media's influence on Gen Z's personality suggest the need for longitudinal studies to track long-term effects, exploration of platform-specific impacts, identification of mitigating strategies, understanding neurological implications, and consideration of global vs. regional differences. Addressing these gaps can inform interventions for healthy online behavior. Keywords: Generation Z, social media, personality development,