After the establishment of New China ,the hydraulic const ruction has great accomplishment . Facing 21st century ,the water resources development has new problems. China is a count ry short of water. Industry ,agriculture and municipality are all short of water.But the water use is ext reme lavishly. The water pollution
is very serious. China is a count ry with f requent flood disasters. It is urgently needed to organize multiple discipline research for new st rategy of water resources development . To establish a water saving society should be our national policy. It is necessary to t reat the polluted water and to cont rol the flood disasters.