The article discusses the different sedimentary environments in the southern Yellow Sea. Researchers found that there are low-energy and high-energy environments, each with distinct characteristics. Muddy sediments in the area are formed by cyclonic and anticyclonic systems. Cold eddy sediments are found in the central part, while warm eddy sediments are in the southeast. Sandy sediments cover the seabed in certain areas, and large sandstone gravels are present in high-energy eroded environments. Fine materials are re-suspended and transported to low-energy areas for deposition. The study establishes a model for the formation of muddy sediments in the southern Yellow Sea.