Abstract: Multiple distribution networks may be involved within a city. Before an extreme disaster, overall consideration of the potential restoration demand of distribution networks and reasonable deployment of mobile emergency resources can help reduce the dispatching time of mobile resources among distribution networks after disasters, quickly form islands to realize critical load restoration, and thus improve the resilience of urban distribution networks. Considering multiple scenarios where extreme disasters may have different impacts on distribution network lines and transportation network roads, with the maximum expected effect of post-disaster load restoration as the target, this paper proposes a mixed-integer linear program（MILP） model considering potential restoration demand for pre-disaster positioning of mobile emergency resources of urban distribution networks. The constraints include pre-disaster positioning constraints, post-disaster resource dispatching constraints in multiple scenarios and distribution network restoration constraints. The demand for mobile emergency power supply and emergency repair crews for load restoration and line repair in each scenario is considered. Finally, an urban distribution network and its geographically corresponding urban transportation system are built and used to verify and comparatively analyze the effectiveness and superiority of the proposed predisaster positioning method for mobile emergency resources.