This research aims to know whether Computer-Based Graphic Organizer (CBGO) intervention have significant effect in teaching reading narrative text. The researcher finds the effects of CBGO in teaching reading narrative text. The study employed a quantitative method using a quasi-experimental study that focused on the interrupted time-series design. The research was conducted with the number of respondents 30 students of class IX B of MTs Khozinatul Ulum Blora in the academic year of 2021/2022. During the study, the researcher gave the pre-test, treatment, and post-test. The researcher gave the pre-test three times. Then the treatment was given. The post-test was given three times. The results are 1. There is a significant effect in teaching reading by using CBGO. Where the percentage of the pre-test was 82,33% and the percentage of the post-test was 101,66%. It means that the percentage of the post-test more highly than the pre-test. 2. The effects of the CBGO in teaching reading narrative text were dominant in the reading enjoyment. The effects in the reading enjoyment were the pleasure, enjoyment, and comfortable. Thus, the students felt pleasure, enjoyment, and comfortable when using CBG in teaching reading narrative text. With these strategies, the researcher hopes that students like reading differently or style and have more fun using a new style in reading.