With the development of our society, online libraries are becoming more and more popular. In my opinion, for our better development, we should attach importance to the online library. Compared with the traditional library, the online library has many advantages. First of all, using the online library can save us a lot of time, which satisfies people's pursuit of high efficiency. Second, online libraries make it easier to search for or access relevant information that people want. Third, the online library can add less paper consumption, so that we can better protect the environment. In a word, online library is beneficial and full of prospect, so it should be popularized widely.