Estuary is an essential habitat for fish, occupying an important position in the sustainable development of fishery resources. Carrying out evaluation research on estuary habitat quality is of great significance for understanding the status of estuary habitat functions and providing management bases. In this paper, the research methods and application progress of estuarine fish habitat quality assessment are reviewed, mainly focusing on three aspects: (1) based on the quantity distribution characteristics of fish, through the correlation between the quantity distribution characteristics of fish and environmental factors, exploring the suitable habitat distribution pattern of fish species; (2) based on the survival performance characteristics of fish, screening the survival performance characteristics indicators of each stage of fish life history and evaluating the quality of different types of habitats; and (3) based on the community structure characteristics of fish, comprehensive evaluating estuary fish habitat quality by constructing a fish community evaluation index. The evaluation of habitat quality of estuarine fish is helpful for understanding the change mechanism of estuarine fishery ecological function, providing a theoretical basis for the rational control of human activities along estuaries, the development of monitoring and early warning techniques for estuarine habitat quality, and the scientific implementation of estuarine habitat protection and restoration.