In a line with the development of technology many teachers use flipped instruction model as their model to teach in the classroom, especially in reading class, Flipped instruction model is an innovative teaching method that reverses traditional teaching rather than lecturing, teachers assign videos as homework to introduce the topic on students. Hence, the present study was designed to find out the effectiveness of flipped instructions model on students’ reading comprehension of descriptive text. This research is a type of quantitative research with the Experiment method where this research is a pre-experimental design that utilizes one group pretest and posttest without a control group. There was two variables in this research: independent and dependent variable where the independent variable is flipped instruction model and dependent variable is the students’ reading skill. The participants in this research were 33 students from SMP NEGERI 1 LANDONGI, consisting of 12 males and 21 females. The pretest was given to measure students’ prior reading skills before applying treatment. After the treatment, the students are given a test as a post-test. The pre-test and post-test consisted of 20 multiple-choice questions. The data were analyzed using SPSS 16.0 for Windows and hypothesis testing (paired-sample T-test). Based on the results of data analysis, it is known that the average score of the pretest in the experimental class is 69.55, the post-test is 90.15. And the improvement of students from pre-test to post-test is 20.6. The value of the t-test is - 6.875 which is the value of sig. (2 tailed) is 0.000, it means the T-test is lower than 0.05 (0.000 < 0.05) According to the result, the researcher interprets that using Flipped instructions model was effective to teach reading comprehension, especially in descriptive text.