根据1991～2000年对长江入河排污口及排污量调查，对长江的纳污状况和纳污量变化趋势进行了分析。指出造成排污量增大的原因是：社会经济快速发展，入河排污口数量增多，查处违法不严，贯彻国家政策不力，对水污染治理滞后等。并提出了对策建议。

The present situation of the pollutional orifices entering the Yangtze River and the changes of the pollutional load are analyzed acording to the investigation results in 1991-2000. It is pointed out that the increase of the pollutional quantity is caused by socioeconomic development, non effective execution of laws and national policies, slow progress in pollution control, increase of pollution discharge orifices and so on. Finally, some suggestions about countermeasures are proposed.