To improve the traditional data management method of surrounding rock cloud classification system of highway tunnels, the MySQL is introduces database into the design of the cloud grading system. The system uses a relational database, E-R modeltodesign conceptual structure, and describes four specific entities and one-to-one, one-to-many relationship between entities. So that it is realized to store, modify and delete MySQL database in the integrated development environment of Wamp, and convenient to use PHP technology to establish a dynamic interactive Web system, and implemented using a Web browser to access the MySQL database.With an example, this paper achieved using MySQL database to manage the data of surrounding rock cloud classification system of highway tunnels and quering related information, surrounding rock level and construction methodsquickly through Web pages. The example shows that using MySQL to manage and transport data has achieved good results in the data management in the surrounding rock cloud classification system of highway tunnels, accelerated the development of cloud classification system, and verified that MySQL database is the foundation and guarantee for the development of surrounding rock cloud classification system of highway tunnels.