The invention discloses an active power distribution network voltage control method based on power voltage sensitivity analysis. The active power distribution network voltage control method comprisesthe following steps of 1, acquiring power distribution network parameters, establishing a power distribution network simulation model, and carrying out voltage simulation analysis; 2, determining themain nodes in the power distribution network as voltage control objects; 3, obtaining a sensitivity matrix of the main node voltage and active-reactive power of a power distribution area; 4, dividingthe main node voltage control area into an allowable interval, an operation interval and a control interval; 5, monitoring the main node voltage in the power distribution network and each power control equipment (comprising distributed generation), wherein when the sampling voltage of the main nodes continuously exceeds the allowable interval for three times, a power regulation target value is issued to each power control equipment according to the sensitivity matrix, and voltage control is carried out; and 6, realizing power adjustment of each equipment by control, so that the voltages of themain nodes are controlled within the operation interval. The method is simple, practical and easy to implement.