Speaking of Didi's dispatch algorithm, you may feel both mysterious and curious. From the taxi call to the driver, the Drip platform grabs the order and finally goes to the platform to send the order. Everyone’s travel experience has undergone earth-shaking changes. In response to tens of millions of calls every day, Didi's dispatch algorithm has been continuously trying to get more people to get to the car. This article will focus on how we analyze and model this problem, and what is this? Algorithm challenges, and introduce some of our commonly used dispatch algorithm, which allows us to continuously improve the user's taxi certainty.