Abstract: With the large-scale development of distributed power supply, electric vehicles and other diversified new elements of the new industry, superimposed on the frequent occurrence of floods, typhoons and other extreme events, the distribution network planning, design and investment decision-making faces great challenges. However, the traditional distribution network planning has not fully mobilized the new elements and new industries to support the power system. The paper firstly combs through the research status quo of extreme event impact quantification methods, resilience planning, and investment strategy, and summarizes the existing investment effectiveness evaluation methods, and finally combines the distribution network development demands adapted to extreme events, and puts forward an outlook on the future research direction of resilience planning and investment strategy optimization.