Normal daily water intake is 2,500-3,500ml. Drinking too much water will lead to water retention and cause symptoms in the digestive, circulatory and urinary systems. 1. Digestive system symptoms: drinking too much water will appear bloating, abdominal pain, diarrhea and other symptoms, and in severe cases, absorption and digestion are impaired. 2. Circulatory system symptoms: drinking too much water will aggravate the original disease, such as myocarditis, coronary atherosclerotic heart disease, which will lead to heart failure and cardiac insufficiency aggravation, drinking too much water to increase the afterload, but also cause hypertension. 3. Urinary symptoms: drinking too much water will lead to the emergence of water intoxication, more than the load will appear around the edema. And too much water can not be discharged in time, will affect the glomerular filtration function, affecting the tubular concentration. It is recommended to control the amount of water consumption and drink in moderation.