Based on the historical studies and combined with statistics,harmonic analysis,means low-pass filtering and spectral analysis,the characteristics of the tides and residual currents were analyze with data of more than 3 months from Quanzhou Bay waterway Mstation.The result shows that the tides at the station is regular semidiurnal tide,with a predominant semidiurnal component M2 .The dominant direction of all rising tide layers are of WNW direction,and the dominant direction of surface ebbing layers are of SE—ESE direction,with the measured rise and ebb maximum flow rates up to 151 cm /s and 138 cm /s,respectively.The estuarine circulation dynamic process and vertical circulation is rather clear and evident at the station.From the surface to the bottom,the residu-al stream flows clockwise from WSW to NW.The tension of water body increases with the roles of ebb tides and sa-linity layer structure that decreases gradually with the flood tide.%在前人大量研究的基础上，通过数据统计、潮流调和分析、低通滤波及谱分析等手段对泉州湾湾中水道上 M站3个多月的实测资料进行潮流和余流特征分析．结果表明：该站为规则半日潮流，以半日潮分量 M2占绝对优势；各层涨潮流的主导方向均为 WNW 向，落潮流主导方向表层为 SE—ESE 向，实测涨、落潮最大流速分别达151 cm ／s 和138 cm ／s．M站河口环流动力过程非常明显；从表层往底层，余流流向沿顺时针方向从 WSW 向往 NW 向偏转；水体在落潮时受潮汐张力的作用，盐度的层化结构逐渐增强，而在涨潮时受潮混合的作用，盐度的层化结构逐渐减弱．
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