The invention discloses a multi-objective active reconstruction method for a distribution network based on a perfect match genetic algorithm. The method comprises: firstly, integrating power loss, voltage deviation and system stability margin into an objective function, and introducing a judgment matrix method and a linear weighting method to determines weight of each index and realizing transformation of a multi-objective function; secondly, aimed at disadvantages of a traditional genetic algorithm, providing a multi-chromosomal chiasma strategy based on a principle of perfect match, to enrich diversity of population evolution methods and greatly enhance computational efficiency and optimizing ability of the algorithm; finally, by setting a critical value, realizing self-perception and active reconstruction of an active distribution network to improve security and stability of the distribution network. Simulation examples show that the model and the algorithm and concept of active reconstruction provided by the invention conform to thinking of active operation and active control of the current active distribution network, and the method has wide application prospect.