Cloud computing has become a new stage in the construction of information systems with the advantages of cost saving and efficiency improvement.But in the aspect of information security design

the safety standards are incomplete

because of existing standards are mainly oriented to the system environment with fixed boundary. According to the project experience

from the point of maturity

the feasibility

this paper introduces new security risks in cloud computing information security construction

and compare the existing information security classified protection stand

explored a new cloud computing architecture of information security system

and puts forward the supplementary construction scheme for cloud security on the basis of the existing security technology standards

that provides reference for the design of information security of cloud computing.