Drinking water at night the next day edema indicates that too much water is drunk and not effectively discharged from the body. In this case, it is recommended to control the amount of water drunk, and not to eat too salty food, which leads to too much water and sodium retention, resulting in edema the next day. Oral diuretics can soon relieve edema, while attention should be paid to whether there is poor heart function, poor lung function or hypoproteinemia or poor kidney function. You should go to the hospital for laboratory tests of liver function and kidney function, and pay attention to whether there are signs of panic, chest tightness and shortness of breath. Only by finding out the cause and treating the original disease can we relieve edema. It is recommended that we should control the amount of water we drink and eat too salty food.