The express industry in China has experienced explosive growth in recent years. How to improve the efficiency of express delivery and ensure the traffic safety of couriers has become an urgent issue to be solved. Combining with the application of the traveling salesman problem (TSP) in express delivery, we use the C-W saving algorithm to optimize the express delivery route. Monte Carlo simulation shows that the C-W saving algorithm is better than the nearest neighbor algorithm (NNH) currently used by couriers, and the optimal path found by the C-W saving algorithm is shortened by 7.8% on average. We use the C-W saving algorithm and Shiny R technique with the help of Amap API to obtain the route information between distribution points, and develop a Delivery Helper, an Internet-based express delivery route optimization tool. The Shiny technique employs R language to set up dynamic interactive web applications, simplifying the process of web page development. The courier companies or couriers can use the Delivery Helper by simply logging into the software URL. The software is expected to improve the delivery efficiency of couriers and reduce the number of times that couriers look down at mobile phones, thus ensuring traffic safety.