In the year 2025, It is certain that Majority of people by the ranging age of 18-29 years old, a stage that would most likely use Social-Media on their daily lives, however with many phenomenon due to engaging this social media use, recent study shows that it there are significance between one’s Self-esteem and Self-concept, This Study consists samples of 124 in total, the only criteria given was by the ranging age of 18-29 years old following accordance to Arnett’s revised theory on Emerging Adulthood (2014) and Social-Media User. This Study uses two types of instruments to complement the two variable keys and which consist Rosenberg’s Self-Esteem Scale (RSES) for Self-Esteem and Self-Concept Clarity Scale (SCCS) for Self-Concept. The results showed a Significance between the two Independent Variables with the value (p < .001) with an unstandardized coefficient of (-1.107), indicating that as Self-Esteem increases, Self-Concept decreases.