Abstract: This paper presents a study on the application of role-play activities to the first year students at Thai Nguyen University of Technology and deals with the question if role play enhances the students’ communicative competence. In the research, the experimental method was used. The pre-test and the post-test were assigned to both the control group and the experimental group to collect data. Then the data was analyzed through the descriptive statistical procedures of SPSS Version 20. The findings indicate that the students’ communicative competence was improved through role-play activities. The students used their grammar and vocabulary more correctly and appropriately. Additionally, the students’ pronunciation was improved substantially with intelligibility and they also communicated with each other better. Therefore, role play should be encouraged at Thai Nguyen University of Technology.