Abstract: Dynamic positioning is the core supporting technology for autonomous underwater vehicles (AUVs) to achieve precise operations. Its research objective is to improve the positioning accuracy, environmental adaptability, and task coordination capabilities of the equipment in complex underwater environments. The basic principles and system composition of AUV dynamic positioning technologies are briefly described, and the application scenarios, advantages and disadvantages of different types of AUV dynamic positioning technologies are summarized. The research status of dynamic positioning core technologies in domestic and foreign research institutions is focused on. The results show that foreign countries are leading in equipment maturity, basic theory, high-end sensors, and complex environmental adaptability, while our country has made remarkable progress in algorithm innovation, cooperative control, and application scenario expansion, and is moving from "following" to "co-running-partial leading". The main challenges and technical difficulties faced by AUV dynamic positioning technologies are then summarized, and the future research directions are discussed.