First, reading books helps us widen our knowledge. Vietnamese has a proverb which means that we should travel to broad our understanding, if we always stay at home with our mother, we will never be wise. However, nowadays, not only does reading books costs less money but it is also more comfortable than taking a trip. We just lie on the couch and comprehensive what is happening in the books. Thanks to the wide range of books such as science, literature, astronomy, archeology, biology, physics, etc. we can get information focus on our own fields as well as the others. The more books we have read, the more knowing we have obtained.Secondly, reading books helps us improve our expression ability like writing and speaking. The writing style of some our favorite writers will affect ours. Especially, when we read foreign literature, we will not only know more about that country but also have chance to improve our reading skill, learn new words which can be used to better our essays.