Normal adult daily water intake is 2500-3500ml, such as too much drinking water will lead to excessive retention of water and fluids, not absorbed by the body at the same time, but also increase the side effects of the body, usually causing symptoms of the digestive tract, symptoms of the circulatory system, symptoms of the renal system, symptoms of the endocrine system. 1, causing symptoms of the digestive system, with abdominal distension, abdominal pain, easy diarrhea and other situations occur, serious cases will affect 2, drinking too much water caused by the circulatory system symptoms are particularly serious, will make the original disease such as coronary atherosclerotic heart disease, myocarditis, cardiomyopathy, insufficient blood supply to the heart, easy to lead to heart failure and cardiac insufficiency aggravation of the situation, too much water volume therefore afterload increased, so it will also trigger the risk of hypertension and the incidence of hypertension in patients with hypertension. 3, such as drinking too much water will cause Endocrine system symptoms, with water toxicity, drinking too much water and more than the load will lead to edema around the body. 4, with nephrology system diseases, if drinking too much water, water can not be excreted in a timely manner, will cause a certain load and pressure on the glomerular filtration function, renal tubular concentration function, which in the long run will lead to chronic renal insufficiency.