A cup of coffee with 1/6 to 1/4 teaspoons of natural salt, plus lactic acid bacteria, and other ingredients that can regulate the intestinal environment. It can eliminate constipation, improve intestinal environment, increase the number of enzymes and improve the working efficiency of enzymes. Caffeine, the main component of coffee, has a diuretic effect; It can dilate bile duct and excrete toxins and wastes in blood. It can also increase the secretion of gastric juice, improve the efficiency of decomposing body fat and increase the amount of high-density lipoprotein, so it has the functions of enhancing metabolism and losing weight. Coffee also contains chlorogenic acid, which has antioxidant effect and can moisturize dry and rough skin. Minerals such as potassium, calcium and magnesium in natural salt are as balanced as seawater, which is conducive to maintaining intestinal minerals.