Abstract: It is planed that the water price which is much lower than Supplying cost now will be rised to cost or meager profit level by 2000. It means the price of irrigation water will rise from 0.03￥/m³ to 0.2￥/m³-0.3￥/m³, that of tap water used for industries will be rised from about 0.5￥/m³-1.5￥/m³ to 3.0￥/m³-4.0￥/m³, and that of tap water used for living will be rised from 0.3￥/m³-1.0￥/m³ to 1.0￥/m³-2.5￥/m³. This strong price rising will decrease violently in the water demand in North China. The total water demand will decrease about 25%-50%, i.e., 132×10⁸m³-250×10⁸m³, which is more than the total amount transferred across Yellow River by the"Medium line" and the "East line" "Water Transfer Projects From Yangtze River to North China".