The invention discloses a method for sharing models between scheduling automatic systems. The method is characterized by comprising the following steps of: 1) reading model files of a local system, and establishing topological graphs of the local system; 2) reading the model files of an opposite-end system, and establishing the topological graphs of the opposite-end system; 3) selecting part of the topological graphs in which a central station of the local system serves as a central node and stations in direct connection with the central station through alternating current lines serve as other nodes; 4) selecting part of the topological graphs in which the central station of the opposite-end system serves as the central node and the stations in direct connection with the central station through the alternating current lines serve as other nodes; 5) replacing the part of the topological graphs which are selected in the step 3) with the part of the topological graphs which are selected in the step 4) or combining the part of the topological graphs which are selected in the step 3) and the part of the topological graphs which are selected in the step 4); and 6) synchronously receiving the real-time data and alarm data of each node in the part of the topological graphs of the opposite-end system. The method has the advantages of simplicity in operation, convenience for use and thelike.