This study was a pre experimental study to improve students’ ability on narrative text in senior high school. In this study, Edmodo was used as media to help student in writing narrative text. Edmodo is an educational website that takes the ideas of a social network and makes it appropriate for a classroom. The process of pre experimental consist of pre test wrote story about Tangkuban Perahu, gave treatment use Edmodo and gave post test. The sample of this study was 29. The result of pre-test showed the total score of the students was= 1240 and the mean score is= 42.76 and is qualified as poor. The total score of the students in posttest test was= 2030 and the mean score was= 70. It is qualified as average to good. It means that Increasing Students’ writing by using Edmodo give a strong significant effect in increasing the students’ achievement in writing narrative text.