This paper analyzes the implementation process of cloud storage of academic information firstly. And then, combined with the investigation of academic information cloud service systems，it analyzes the security requirements faced by cloud storage of academic information, including access security, data security, content security and storage platform security. At last, it is put forward from four aspects of level-based information security guarantee, hierarchical system security guarantee, multi-subjects collaborative security guarantee and effective security regime guarantee for comprehensive security guarantee strategy on cloud storage of academic information.