With the development of smart distribution network, the influence of DG output uncertainty should be fully considered in distribution network reconfiguration, so that the impact of loss of power can be reduced, moreover the reliability and the economy of distribution can be ensured. Under this background, a distribution network reconfiguration model based on the game theory is built in this paper, in which the network topology and DG output are considered as game participants and the reconstruction cost is treated as an objective. Then, through giving an improved game tree method, the reconfiguration model is solved. Finally the effectiveness of the proposed method is validated by simulation for IEEE 33 distribution system, and robustness of reconstruction scheme is analyzed from economy and reliability respectively.