The invention discloses an electric distribution network reactive-voltage three-level coordination control method, which comprises the following steps: (1) creating data input by self structure duplication, (2) performing forward chaining, (3) performing back substitution, (4) performing astringency judgment, (5) returning a result to a caller. The method has the advantages that 1) layered control over equipment according to the installation position and the control range of the equipment; 2) the variation trend of the operating state of a power grid is judge in advance according to short-run and super short-run load predicting technologies, the perspectiveness of adjustment tactics is ensured, the adjustment times of the equipment are reduced, and invalid actions are avoided; 3) the current situation that adjustment equipment of the electric distribution network is deficient is solved by classified coordination control, the adjustment potence of the adjustment equipment is fully exerted, and the economic pressure for investing and constructing the distribution network is reduced; 4) the method can adapt to multiple conventional and unconventional adjustment equipment, such as a subdivided capacitor, a distribution transformer tap, a line voltage regulator, a line capacitor, SVG, SVC and TSF.