This paper introduces the data transmission mechanism currently practiced under the cloud computing architecture.To address the lack of coupling among tasks on the links under the network transmission mechanism,we propose an improved data transmission scheme for the future network architecture which is cloud computing oriented.In view of improvement in three aspects,namely the transmission delay,transmission reliability,and storage security of the cloud node,we build a new cloud architecture in order to meet different requirements in the Qos.Being able to integrate with current network,this scheme is characterized by controllable,administrable and extensible,which makes it applicable for the new network communication infrastructure.