According to the Dietary Guidelines for Chinese Residents, under mild climatic conditions and a low level of physical activity, the recommended daily water intake is 1.7 liters for adult males and 1.5 liters for adult females. Water has important physiological functions for the human body, including maintaining normal body temperature through respiration and perspiration, lubricating organs and joints, and constituting the main component of intestinal fluid and gastric fluid. According to the Dietary Guidelines for Chinese Residents, the recommended daily water intake for normal men is 1.7 liters and for women is 1.5 liters. It is recommended to drink plain water or light tea, less or no sugar-sweetened beverages, and no beverages instead of plain water. If there are other special circumstances, such as high temperature work, etc., you need to increase the amount of water as appropriate.