With the development of new distribution systems towards high reliability, the key to ensuring continuous and stable power supply lies in improving the flexible transfer capability and autonomous recovery level after system failures. The key to achieving this goal lies in accurately identifying weak links in the system. This article proposes a weak link identification method based on complex network theory and analytic hierarchy process. Using complex network theory, the distribution network is abstracted as a connection matrix, and a “hub index” is proposed to quantitatively evaluate the hub performance, load distribution balance, and rationality of power lines; Propose an “overload indicator” to quantify the risk of line overload; And combined with the degree of aging and the importance of load, a comprehensive evaluation system is constructed, and then the Analytic Hierarchy Process is used to calculate the comprehensive score, achieving a comprehensive evaluation of the weakness of the line. Finally, taking the IEEE 33 node classic distribution network as an example, the results show that this method can effectively identify weak links in the distribution network, providing reference for the safe and reliable operation of the distribution network and network optimization.