The invention discloses a split dispatching-provincial dispatching two-stage coordinating wind power additional tissue control method. A wind power control region is built in a split dispatching AGC application for applying direct control over provincial dispatching wind power inside split dispatching, a virtual wind power unit corresponding to each provincial dispatching is built in the wind power control region, a wind power control region is built in the provincial dispatching AGC, wind power control is applied, after the wind power control function is enabled in each provincial dispatching, the split dispatching AGC calculates a wind power generation index of each provincial dispatching at the time interval of every 5 min at first, and then issues the index to the provincial dispatching at the time interval of every 1 min, and after the provincial dispatching receives the wind power index issued by the split dispatching, a wind power plant is subjected to power control through a wind power control system of the provincial dispatching. On the basis of two-stage coordinating control of split dispatching and provincial dispatching, wind power consumption can be performed within the larger range, and maximum utilization of wind power resources is ensured within the larger range through surplus and deficiency dispatching.