The invention discloses a dynamic path planning method based on traffic prediction, whichcomprises the steps ofnetwork model abstraction, network stacking, and spatiotemporal rolling algorithm;the network model abstraction is conducted, specifically, a real road is transformed into a network diagram structure of nodes and weights, and the network model abstractionis divided into an upper layer network model abstraction and a lower layer network model abstraction, and the weight setting comprehensively considers the traffic flow density and the path length; the network stacking is conducted, specifically, real-time traffic information is integrated with predicted traffic information of multiple step lengths to obtain a final network model;and the spatiotemporal rolling algorithm comprises atime rolling process and a space rolling process, the traffic state is refreshed according to a certain time interval, and dynamic planning is realized. According to the dynamic path planning methodbased on traffic prediction,it can be ensured thatthe increase of the travel path is within a certain range in the case of relatively congested traffic, and the travel time is greatly shortened.