It can be inferred that to have good social adjustment, emotional intelligence plays a great role in it. On the other words, the students who are smart emotionally will be accepted easily in their social environment. Based on the previous explanations, emotional intelligence is a factor which was assumed as a factor whose great role in affecting the students’ social adjustment. However, how great the role of emotional intelligence is on the primary students has not been observed yet. Thus, the researchers were interested to conduct a research related to the impact of emotional intelligence towards social adjustment of the primary students of Muhammadiyah Karangwaru Yogyakarta Elementary School.