This paper is aimed at describing the impact of Shadowing Technique on students’ listening skills achievement. Therefore, the experimental research was conducted and the techniques on collecting the data were administrating pre- and post- tests to the experiment and control groups, which consisted of 30 university students in each group. Then, t-test and ANCOVA were applied on analyzing the data, then to find the impact of shadowing technique on EFL learners’ listening skill achievements in English Department of Universitas Negeri Medan (UNIMED), Indonesia. As a result, there was a significant difference between the mean of experimental and control groups (F = 8.98, p=. 004 < .05). In addition, there was a significant effect of applying shadowing technique on students’ listening skill achievements (F=56.10, p=0.00<0.05) and the experimental group grammatically outperformed the control group. In conclusion, the null hypothesis was rejected and the alternative hypothesis was accepted.