Watermelon is a cold fruit, so it has the effect of removing fire and usually does not lead to fire, so you can choose to eat it in moderation according to your personal situation. Watermelon has a sweet taste, and from the perspective of Chinese medicine, it is cold and sweet in nature, and belongs to the heart, stomach and bladder meridian. It has the effect of quenching thirst, clearing heat and diuresis, and relieving summer heat, so it can be used to relieve the symptoms of dry mouth, reduced urination or yellow urine that occur in summer due to high temperature and lack of water, as well as treating sore throat and sores on the tongue. Watermelon contains a lot of water and rich nutrients, such as glucose, amino acids, fructose, potassium, calcium and other substances and vitamin A, vitamin B, vitamin C, etc., which can replenish the body’s water, and potassium can also replenish the potassium lost in summer due to a lot of sweating, so as not to cause water and electrolyte disorders. However, because watermelon is a cold food, a large amount of consumption is likely to cause gastrointestinal disorders, may appear abdominal pain, diarrhea and other uncomfortable symptoms, therefore, people with a cold spleen and stomach and the elderly, children and other people with a weak spleen and stomach should not eat, and menstruating women need to avoid eating, so as not to cause dysmenorrhea symptoms aggravated. In addition, watermelon contains high sugar, diabetic patients need to control the amount of consumption, so as not to cause a rise in blood sugar.