The invention discloses a dispatcher power flow calculation method based on cloud computing, for the traditional dispatcher power flow, the method can automatically distribute calculation resources ofthe dispatcher power flow according to user information, supports multi-user operation, is not influenced by each other, and can push different power flow calculation results according to the user information; The power flow concerned by the dispatcher is out of limit at the cloud terminal; information of heavy load, transfer and the like is concentrated on one main picture; According to the method, the functions of query, operation and checking of equipment operation and calculation results can be facilitated when the power flow calculation function is used in the same main picture, the usehabit better conforms to the application requirement of off-line calculation and the use habit of a user, and therefore the method serves as a complete function of power flow calculation and has a good application prospect.