In order to make the online real-time network reconstruction work of the distribution network more practical and effective, a new online real-time network reconstruction method considering security and economy is proposed.At,first, select three indicators of network loss, load balance and voltage deviation to establish system performance indicators.Then, the analytic hierarchy process is used to fuse multiple indicators to form a comprehensive performance index, and the traditional network reconstruction coding method is improved to improve the optimization efficiency of the algorithm.Finally, through the analysis of IEEE33 node system with distributed power supply, the reconstruction scheme of distribution network in different time periods is obtained, and the feasibility and correctness of the method are verified.