Abstract: The high-density aquaculture method of ponds causes a large number of residual bait and excrement into the water, which leads to the increasingly serious water pollution of aquaculture tail. The management and recycling of aquaculture tail water has become a key issue restricting the sustainable development of aquaculture in China. In this paper, the characteristics of aquaculture tail water and the advantages and disadvantages of physics, chemical and ecological technologies in the current tail water treatment process are deeply analyzed, and the problems existing in the application of pond aquaculture tail water treatment technology are summarized, and a series of improvement measures are proposed.