As a very important skill both in English teaching and learning, reading strategy has been emphasized at home and abroad for a long time. Many scholars and teachers make research on undergraduates of English major or non-English major. However, the postgraduates are often neglected. Actually, it is also imperative to make a study among postgraduates of non-English majors, getting the information of their use of reading strategies and giving some useful suggestions to them. Therefore, this paper makes a quantitative study among 40 postgraduates from College of Mechanical Engineering in Chang'an University. This study shows that postgraduates of non-English major in Chang'an university do not frequently use reading strategies to improve their reading speed and proficiency. And there is a big difference between the successful learners and unsuccessful learners in terms of the use of reading strategies.