Aero-engine multi-pipeline layout optimization method and system

The invention relates to an aero-engine multi-pipeline layout optimization method and system, and the method comprises the following steps: S1, obtaining the endpoint coordinates of a pipeline and a bounding box of an engine surface accessory, projecting the endpoint coordinates and the coordinates of the bottom surface of the bounding box to a plane, and obtaining a two-dimensional simplified drawing of a laying space; s2, for the laying space two-dimensional simplified graph, obtaining an initial path of a pipeline in the laying space two-dimensional simplified graph; s3, grouping the pipelines in the laying space two-dimensional simplified graph according to the initial paths of the pipelines in the laying space two-dimensional simplified graph to obtain a plurality of pipeline groups;s4, sorting the plurality of pipeline groups to obtain a first set; s5, for any pipeline group in the first set, performing pipeline path planning to obtain an optimal pipeline path combination; s6, according to the optimal p