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According to the features of power system, a new mathematical model for distribution maintenance scheduling is proposed, which combines load path transfer and maintenance schedule time optimization problem. Network reconfiguration algorithm and genetic algorithm are used to solve load path transfer problem and maintenance schedule time optimization problem respectively. Due to the large number variables of the network reconfiguration, encoding with round line and feasible solution operator are adopted to decrease the searching space in the paper. The searching space is significantly reduced and the solution speed is raised. The proposed model and method are applied to IEEE33 test system, the result show that proposed method can obtain the most optimal maintenance schedule and the load transfer line with minimal network loss. The method observably reduces the power off lose which maintenance brings.