Abstract: Taking a photovoltaic power station project with an agro-solar complementary system in a hilly area of Shaanxi Province as an example, this study addresses the problems of rough path planning, difficult construction, and inconvenient operation and maintenance in cable laying. A systematic optimization scheme for cable laying paths is proposed and applied, which integrates refined terrain modeling, multi-objective constraint optimization, and three-dimensional visualization verification. The application results of the project show that this scheme effectively avoids terrain and construction constraints through intelligent algorithms, achieving precise control of cable usage and standardization of laying paths. It can significantly reduce material costs, improve construction efficiency, and enhance operation and maintenance conditions. This scheme has promotional value for improving the construction and full life cycle management level of similar photovoltaic power stations in hilly areas.