1. First of all, the resources of digital libraries are generally copyrighted, unlike many online resources that are pirated and have no copyright.

2. Digital library is easy to download, index and browse, unlike many resources on the Internet that need to register VIP, some materials are fake.

3. Digital library can be applied to some enterprises and institutions with separated internal and external networks to solve some security problems in an effective way.

4. Digital library integrates many resources together, which is convenient for you to find information and browse and download information faster.