Big data security protection cloud system based on trusted calculation

The invention discloses a big data security protection cloud system based on trusted calculation. The big data security protection cloud system constructs a security configuration system based on a trusted security grading system and minimal trees on the basis of systems having security grading functions and trusted security configuration functions, and provides a trusted calculating environment for the security protection of information through the cooperation with a security network monitoring system. The trusted protection cloud system starts from the acquisition and security grading of basic data, divides the network nodes into four different security grades by calculating the importance values of the network nodes, and constructs an integral trusted environment, and by means of the security grading configuration with high credibility, the trusted security of information security and protection is guaranteed, the data cannot be acquired randomly, and a good balance between the calculated quantity and trusted security configuration is achieved.