The present invention discloses an intra-day plan calculation method based on interactive coordination and rolling optimization. A main station and sub-stations perform rolling calculation in a fixed cycle. Each sub-station reports to the main station the available generation capacity and stored energy in a future set time period, the main station calculates the predicted generation capacity and storage energy of each sub-station in the future set time period; each sub-station calculates the power curve in the future set time period; and the main station gathers power curve data submitted by all sub-stations to determine whether to meet main station operating requirements, and each sub-station adjusts the generation, energy storage and load plans if not meet the requirements until the requirements are met. The method adopts a distributed design mode to disperse the model in the master station and the multiple sub-stations and adopts the method of interactive coordination, rolling optimization and recursive solving to reduce the size of the calculation model, to greatly increase the calculation speed, and to ensure the instantaneity required by the intra-day plan rolling calculation.