This paper presents the results of a paleomagnetic study of eight sediment cores from the Changjiang Delta. A total of 851 samples were measured. The results of paleomagnetic measurements are combined with the results of the measurements of the C14age, which may be correlated with the geomagnetic polarity reversal scales of Cox (1969) back to about 4.5 million years ago. We have established the geomagnetic polarity reversal scales of the sediment cores in this region, ascertained the depth range of the polarity epoch and events, calculated sedimentation velocity among them and differentiated the Quaternary strata. The depths from the Brunhes normal polarity epoch to the Matuyama reversal polarity epoch are between 65-248 m, from the Matuyama reversal polarity epoch to the Gauss normal polarity epoch are between84-321 m. We have taken the Mammoth event in Gauss normal polarity epoch ,for the bottom of the Quaternary.The iresu1ts of the calculation of the sedimentation velocities show that their velocities increased gradually from the Early Pleistonece to the Holocene.