The invention discloses a PMU data-based wind electric field voltage control performance evaluation method. The executive capability of a wind electric field on a voltage control requirement is accurately evaluating by utilizing millisecond-class wind electric field bus voltage dynamic data measured and recorded by PMU, combining a voltage control adjusting command of the wind electric field under an automatic voltage control system (AVC) and defining and calculating the voltage adjusting rate, the voltage adjusting precision and the voltage adjusting response time performance index of the wind electric field. By the PMU data-based wind electric field voltage control performance evaluation method, the defect of the existing wind electric field voltage control capability evaluation technological method can be remedied. The performance evaluation method is operated on line and convenient to calculate, does not have special requirement limit, and can provide accurate reference for evaluating the wind electric field voltage control capability.