Abstract: The trend of multi-energy coordination and mutual assistance of integrated energy utilization makes energy systems more interconnected and interdependent. By taking the initiative to optimize the dispatch and deployment of emergency resources before extreme weather, the impact of extreme weather on interconnected energy systems（IESs） can be greatly reduced and the resilience level of energy systems can be improved. To this end, a pre-disaster collaborative dispatch strategy of emergency resources is proposed for a typical electricity-gas IES. First, the failure risk of lines is calculated based on disaster prediction information, the set to be decided is screened, and the fuel exchange process among fixed/mobile generators, mobile gas storage tanks and gas pipeline network is modeled. Then, with the objective of maximizing the degree of electricity and gas load supply after the disaster,this paper establishes a mathematical optimization model considering the pre-disaster collaborative dispatch of line reinforcement,fixed/mobile generators and mobile gas storage tanks. The efficient solution is achieved by convex relaxation of the non-convex pipe network constraints of the natural gas network. Finally, the effectiveness of the proposed method is verified by cases.