Due to the low energy storage power and high load capacity of active distribution network, an economic dispatching method based on data adaptive robust optimization is proposed. According to the operation characteristics of the distribution network, a multi-objective function is established, and the economic operation cost and economic management cost are accurately matched. Based on the power load variation of the distribution network when it is working or not working, the array vectors of the distribution network when it is working or not working are calculated, and the array vectors are optimized within a unit of economic dispatching time to achieve quota robust optimization. The optimized value is substituted into the equilibrium function to compensate the parameters deviating from the equilibrium value and complete the economic dispatching. Simulation results show that the proposed method has good economic dispatching effect, which can realize the expected goal of high energy storage power and low load capacity of distribution network.