This study aims to test the Communicative Language Teaching (CLT) approach in improving vocabulary memorization, conversation skills, and writing skills for non-native Arabic speakers. The research was conducted among 1st-semester students of the Islamic Primary Education (PGMI) at the Faculty of Education at IAIN Metro Lampung for the 2020/2021 academic year. This quantitative research uses quasi-experimental methods with control classes and experimental classes. Primary data were collected through student tests and interviews with Arabic lecturers, while secondary data were obtained through observation and documentation. The study population included all 1st-semester students of the PGMI Department, with the sample consisting of class B as an experimental group (33 students) and class C as a control group (19 students). Data analysis using the T-Test showed that the communicative approach was quite effective in learning Arabic, indicated by an N-Gain score of > 56% on vocabulary mastery, dialogue skills, and writing Arabic texts. The significant difference between the pre-test and post-test in the control and experimental groups with significance values of 0.000 < 0.005 supported the working hypothesis and rejected the null hypothesis. In conclusion, the communicative approach has proven effective in improving students' speaking skills (vocabulary mastery and dialogue skills) and writing (texts).