Abstract: The purpose of this study was to investigate the effect of concept mapping strategy on the listening performance of EFL university students. The participants were 55 students majoring in English translation at Payam Nour University. Data were collected using composition writing and concept maps. Based on the result of the first composition, the participants were homogenized and assigned to experimental and control groups. During the writing sessions, the researcher explained about the process of writing. Structure of a paragraph was explained and the processes of planning, first drafting and editing was fully described. Then the students wrote a composition based on a topic. This phase of study was similar for both groups, but the control did not carry out the main treatment which consisted of learning how to use concept mapping technique as a pre-writing strategy. The experimental group wrote paragraphs and compositions based on their concept maps. When the treatment was finished both groups wrote another composition as the post-test of the study. The results revealed that experimental group significantly outperformed the control group on the post test measure. The finding of the study shows that teachers and students can make use of concept mapping technique to improve the writing skill.