The purpose of this research is to explain the effectiveness of using Fix-up Strategy to teach reading comprehension of narrative text at the eleventh grade of MANU 01 Banyuputih Batang in academic year 2018/2019. The background of the study is the students of eleventh grade of MANU 01 Banyuputih Batang have the problem to understand their Englis learning especially in reading. They are still lack of vocabulary. Their comprehension can be recognized through their way of reading. The research design was an experimental research, which conducted in two classes; the experimental class and control class as sample. The experimental class was taught by using Fix-up strategy, while the control class was taught without Fix-up strategy. The researcher gave try-out test to try-out class. The test had been tried out to find out the validity, reability, difficulty level, and discriminating power before it used to gather the data. The formula that was used to analyze the data was t-test. After collecting the data, it was found that the pre-test average score in experimetal class was 60.57 and control class was 67.64. meanwhile the post-test average score of experimental class was 83.00 and control was 67.00. It was obtained that t-test was 6.03 and the t-table was 2004 for alpha (α) 5%. The t-test was higher than t-table since t-test score was higher than t-