Adults drink about 2000ml of water a day, the water intake includes direct drinking water, eating, water contained in fruit. If the fruit you eat contains more water, you can reduce the amount of water you drink by eating the fruit. If the water contained within the eaten things is less, the drinking water can be increased appropriately, and patients can decide according to their own drinking water situation. At the same time, patients should add or reduce according to the amount of water volatilization and discharge. If it is a hot summer, the organism will emit a lot of water through the skin, and the amount of water drunk at this time should be increased appropriately. So in the summer when the water consumption is higher, it is because the volatilization is more and needs to be replenished by drinking water.