It is impossible for takeaway delivery staff to plan the takeout delivery route balancing rationality and efficiency.To address this problem,an Improved Ant Colony Optimization (IACO) algorithm is proposed.The initial routes are obtained using the Ant Colony Optimization (ACO) algorithm and then optimized using Large Neighborhood Search (LNS) algorithm.The solution quality is improved by combining the ACO algorithm with the LNS algorithm.The proposed algorithm is verified by simulating the delivery routes for different number of takeout orders.Comparative analysis shows that the proposed IACO algorithm can increase the takeout delivery efficiency,according to the optimal distribution plan and the ideal value of the objective penalty function.The proposed strategy can enhance the intelligence and promote the long-term growth of the delivery system of Internet-connected takeout platforms.