Black tea has a refreshing and thirst-quenching effect, and can provide the body with certain vitamins, minerals and other nutrients, but it can not be used to treat gastric disorders, nor does it have other medicinal effects. Black tea is a fully fermented tea, in the fermentation process, will produce theaflavin, theobromine, etc., so that it has the unique color, aroma and flavor of black tea. Caffeine in black tea can stimulate the cerebral cortex to stimulate the nerve center, and then play a refreshing effect, water brewing black tea can also have a thirst-quenching effect. Black tea is rich in carotene (3870μg/100g), phosphorus (390mg/100g), magnesium (183mg/100g), potassium (1934mg/100g), vitamin E (5.47mg/100g), vitamin C (8mg/100g) and other nutrients. Black tea can not be used to treat the disease, it is recommended that patients with gastric disorders seek medical attention in a timely manner for standardized treatment.