In order to improve students' interest in English teaching, the author puts forward the research hypothesis that the new method of teaching assisted by multimedia technology can stimulate students' interest in reading and improve their reading level, and verified by experimental study. The experiment takes two parallel classes taught by the same teacher in grade two of A middle school in A city as the research object. Before the experiment, a questionnaire was sent to the teachers to understand the effects of multimedia technology and the main reasons affecting their reading level. Through classroom observation, interview, questionnaire and other methods, statistical methods were used to analyze the reading scores and comprehensive language ability test scores of the two classes, the results showed that before the experiment, there was very little difference in English scores between the experimental class and the comparison class, the average score of the experimental class was only 0.3 points higher than that of the comparison class, and the P value was greater than 0.05, indicating that there was no significant difference between the two samples. But after a semester of changes in teaching methods, the results show that, although the English scores of the two classes have improved, the English scores of the experimental class are 1.97 points higher than that of the comparison class, and the P value is less than 0.05, indicating that there is a significant difference between the two samples. It is proved that the application of multimedia technology to the new teaching method can improve students' interest in learning and reading level.