Abstract: In view of the problem that distribution network lines are covered with ice frequently and the overload de-icing is prone to power flow over limit,the flexible adjustment ability of the soft open point （SOP） and the mobility of the mobile de-icing device（MDID） are fully considered in this paper.An optimization method of multi-time de-icing strategy in the distribution network is proposed.Firstly,the variation pattern of ice-cladding thickness during de-icing is depicted based on the heat balance equation and meteorological data.Secondly,the influence of the transportation network on the MDID movement time is considered.To minimize the risk of line breakage and power flow over limit,this paper establishes a bi-level optimization model of the distribution network based on the coordinated cooperation of SOP overload de-icing and MDID path scheduling.The model is solved using an elite-preserving genetic algorithm.Finally,the analysis is carried out by using the hand-in-hand IEEE 33-bus distribution network and 114-bus distribution network.Simulation results verify the effectiveness of the proposed method.