The invention discloses a distribution network reconstruction method with important node voltage dip economic losses considered. The distribution network reconstruction method includes the steps of determining and processing research objects, determining a gene coding rule and genetic algorithm related parameters, determining an objective function and constraint conditions for optimizing a problem, calculating the objective function, generating an optimal distribution network operation mode and the like. The distribution network reconstruction method with the important node voltage dip economic losses considered has the advantages that voltage dip economic loss evaluation based on a quality loss function is effectively merged into application of distribution network reconstruction in voltage dip, an expression of the problem is visual with the minimum economic losses as an objective, particularly, the gap that research analysis of important user nodes does not exist in distribution network construction based on voltage dip is filled through analysis of the important user nodes, and the important guiding significance and the important practical value are achieved.