Nowadays, lectures and teachings have been conducted through social media. However, social media has its downside which when students and youths are not well monitored, they will absorb the negative side from their social media. Hence, this survey focused on the influence of social media on the social behavior of students as viewed by primary school teachers in Ilorin Metropolis, Kwara State, Nigeria. The survey is descriptive with two hundred primary school teachers selected as participants. A research question was raised and answered, and there were three hypotheses formulated and tested using t-test and ANOVA at a p-value of 0.05. The findings revealed that students' usage of social media had a negative influence on their social behaviour. In addition, there were no statistical differences in the view of participants on the influence of social media on the social behavior of teachers based on gender, age, and educational level. Therefore, primary school teachers need to sensitize students on the appropriate use of social media to improve their social behaviour among others was recommended.