Water footprint and virtual water are the hot topics in the field of international water resources research. This paper attempts to use the concept of virtual water and water footprint to calculate virtual water contents in major agricultural products. Furthermore, based on the relationship of production and consumption by regions, the paper calculated virtual water flows and water foot print and water self-sufficiency between China and other nations and between regions in China. The result indicates the total domestic water use was nearly 1 295 billion m^3 in 1999. Of which the green water accounts for 60 % of the total domestic water use, which has a significance role in agricultural production. In 1999, North China transported a virtual water volume of 52 billion m^3 to South China through agricultural products implying north China plays an import role in national food security. For water footprint,China had a volume of 1 304 billion m^3 and 1 049 m^3 per capita in 1999. For water self- sufficiency it was around 99% which means China is a country with high water self-sufficiency. However, the variation is huge among regions. The paper points out the consumption pattern especially the diet pattern has a strong influence on water consumption. The result of China＇ s water footprint per capita proves the conclusion. Therefore, promoting conservative consumption and diet pattern suitable for China＇ s situation will be helpful for establishment of a water-saving society. Although the concepts of water footprint and virtual water supplies are effective means to assess water consumption and water flows between nations or regions, calculation accuracy still has some problems as the agriculture products remain as major research objective and the products are diversified. If we extend our scope to industry and service sector, the result will change significantly. Therefore, further research on methodology is necessary and possible.
马静（1973～）,女,北京人,硕士,主要从事水资源规划、水资源可持续利用等方面研究.E-mail： majing06 @ hotmail. com; majing_ 06 @ yahoo. com. cn