In order to solve the problems of multiple levels, multiple systems, multiple types and unbalanced and insufficient role of the current optical transmission network, the existing optical transmission network is effectively integrated by using the cloud system theory to give full play to the overall efficiency. The framework structure of "optical transmission cloud" is proposed, and the construction methods of white licensing, automatic adaptation, integrated network management mode and packet transmission network(PTN) transmission mode are described, which makes it possible to realize a dynamic and stable "optical transmission cloud" with global coverage, multipoint deployment, random access and plug and play.