Drinking 2 liters of water a day will not change much in normal people after a month, but if they have certain underlying diseases, they may experience edema, heart failure and other symptoms. The body’s normal needs is about 1500 ml, if sweating, dry indoor air, etc. are likely to increase the amount of water consumption, through breathing, sweating, urination, etc. will be excess water out of the body, the person himself will not have too much change. If there are chronic diseases, such as liver disease, kidney disease, heart disease ingesting too much water, may lead to ascites, tissue edema, heart failure and other symptoms, the specific need to be based on the individual’s situation comprehensive. If there are corresponding chronic diseases, you need to strictly control the amount of water intake and output per day, early detection of abnormalities in the body, and timely symptomatic treatment.