Establish an integrated evaluation system of ultrasound technology for the prognosis of acute kidney injury, and in order to achieve non-invasive, reliable early diagnosis "gold standard". Set up collabration with the expert in National Cheng Kung University Medical Center of Taiwan who did a lot of excellent work in basic research of prevention the progression of acut kidney injury. Study the experience about prevention progression of kidney disease in clinical and basic field. Establish cooperation with the professional in Hong Kong University of Science and Technology. To set up the system of natural products research and assess the Astragalus medicinal value.