Based on the investigations of the nutrients in the Changjiang River Estuary and its adjacent waters during Aug. 1985 to Jul. 1986, the spatial-temporal distributions and changes of the nutrients (P, Si and N )and their removal processes in the estuary and the relationship among the nutrients, the flow of the Changjiang River and phytoplankton are discussed. The relation equations between the transports of the nutrients from Changjiang River water into sea and the flow of the Changjiang River are presented. The annual transports of the PO4-P, SiO3-Si, and total inorganic N from Changjiang River water into the sea are estimated to be 1.4×104, 204.4×104 and 88.8×104 tons respectively. The effects of the Three Gorge Project on the distributions and changes of the nutrients in the Changjiang River Estuary and its adjacent waters are forecasted.