Social Networking Site was very popular especially in gathering information and communicating. Through this technology people were able to share their personal information such as their education, data, status and interest. They use these sites like Facebook or twitter to vent out their emotions. There were different studies on how Social Networking affects self-esteem through the way of sustaining an individual’s need to feel loved and to belong. (Feist&Feist, 2010) Using the two methods in this study, descriptive method and correlation method, we aimed to determine the effects of the usage of Social Networking Site to their self-esteem as advantages or disadvantages to the students of San Beda College. Descriptive method was used to clarify whether the hypothesis was true or not and the correlation method was used to determine the relationship between Social Networking and self-esteem. Results showed that the participants’ self-esteem was rated as low and there is relationship between the two variables. Researchers concluded that the use of Social Networking Site can have an effect with the self-esteem of the user.