In general, mulberry leaf water contains protein, crude fat, soluble sugar and a variety of functional active substances, with a certain promotion of antibacterial and anti-inflammatory effects, and can also stop coughing and asthma, clear the liver and eyes, but it is recommended to drink in moderation under the guidance of traditional Chinese medicine, long-term consumption of the following hazards: 1, aggravate the performance of cold body: mulberry leaf is cold and bitter, and patients with cold body often show weakness, low body temperature, cold hands and feet, reaction More slow and other symptoms, and prone to edema or frostbite in winter, long-term consumption of mulberry tea will aggravate such symptoms; 2, affect the gastrointestinal function: for patients with poor gastrointestinal function, such as chronic gastritis, gastric ulcer, acute gastroenteritis and other diseases caused by gastrointestinal disorders, long-term consumption of mulberry water, will make the gastrointestinal mucosa by cold stimulation and aggravate the disease, may also cause patients nausea, vomiting, abdominal pain, diarrhea and other 3, aggravate the symptoms of hypoglycemia, hypotension: mulberry leaf has an auxiliary hypoglycemic, hypolipidemic, hypotensive effect, so it will aggravate the symptoms of palpitations, sweating, hunger and other symptoms of patients with hypoglycemia, and even cause patients to continue to hypoglycemia and coma. Patients with hypotension often experience dizziness and nausea after changing position, after meals, after defecation, etc. Drinking large amounts of mulberry leaf tea will cause patients to increase urine volume and lower blood pressure, further aggravating the symptoms of hypotension. Patients with severe hypotension may also experience dizziness, fear of cold, blurred vision, fainting and other symptoms.