In integrating process of area models, the sub-block models can not be directly integrated because the electricity variable at the border and internal network do not match. Therefore, the method of sensitivity flow adjusting based on electrical distance is proposed. In this method, the distance among the nodes is measured by the derivative of the active power change rate along with the voltage phase change. Selecting the nodes with the smaller electrical distance from the boundary nodes as the adjusted nodes, then alternating iteration using the sensitivity correction can reduce the bias to within the required accuracy gradually. It only selects part of the nodes having a greater influence on the border as adjusted nodes, which does not increase the times of computation, but also can reduce the workload. The application based on IEEE 39 bus system verifies the effectiveness of the algorithm.