The estuary is a salt-fresh water mixed sea area with much nutriment, which has high primary productivity and abundance of zooplanktons. All of these conditions above provide a lot of preies for larval and adult fishes. Advances in ecological studies on estuarine ichthyoplankton are reviewed on the domestic and abroad published papers. This paper includes estuarine ichthyoplankton ecological types, species composition, spatial and temporal distribution, and the effects of the environmental and man-made factors. The environmental factors involve in temperature, salt, turbudity, food, the predation of other animals,and El Nino and La Nina, et al, while the man-made factors consist in the construction of large projects, overfishing, and pollution.