在分析实测资料（１９７８～１９７９）的基础上，运用物质纵向输移模式讨论了伶仃洋河口湾余流的垂向结构，同时，对同步资料进行低通滤波处理，得到垂向低频水流分布．结果表明，两种分析方法对伶仃洋河口环流与水沙输移的解释基本一致，东、西两槽均存在明显的垂向环流，平均流、斯托克斯漂移效应、以及垂向净环流是净输沙的主要贡献项。 Based on the analysis of the measured data (1978 ~ 1979), the vertical structure of the residual flow in the estuary of Lingdingyang Bay is discussed by using the longitudinal transport model. At the same time, the low-pass filtering of the synchronization data is used to obtain the vertical low-frequency flow distribution. The results show that the interpretation of the two kinds of analysis methods is basically the same as that of the Lingdingyang estuary circulation and the transport of water and sediment. There are obvious vertical circulation, average flow, Stokes drift effect and vertical net circulation Is a major contributor to net sediment transport.