Watermelon is sweet and cold, with the effect of clearing heat and detoxifying, removing irritation and quenching thirst, and is often considered to be a fruit that defeats fire. But in the case of too much consumption, it can also cause a fire. As for the cause of the fire, although mainly due to the diuretic function of watermelon, but also from the perspective of Chinese medicine and Western medicine two comprehensive analysis: 1, Western medicine perspective: eat more watermelon on fire, this is due to the diuretic effect of watermelon. In excessive consumption, can cause a large amount of water in the body through the urine out of the body, and at this time into the intestinal water is relatively reduced, may cause dry stool, or even constipation symptoms, so that some people understand the symptoms of fire; 2, Chinese medicine perspective: and from the perspective of Chinese medicine, in the case of excessive consumption of watermelon, due to the diuretic effect of watermelon, will lead to an increase in the amount of urine. This triggers the body to produce the symptoms of yin deficiency and fire, such as a series of fire performance such as a dry and sore throat, dry stools. If you are a cold and damp person, the excessive consumption of watermelon can cause dampness to accumulate in your body, which can lead to fire. Although watermelon has the effect of detoxification of heat, in the presence of sore throat, mouth and tongue sores and other symptoms of fire, you can eat in moderation, but should not eat too much, so as not to aggravate the symptoms of fire. In addition, because watermelon contains more sugar, in the case of poor absorption of sugar in the body, serious symptoms of osmotic diarrhea can occur, so although the consumption of watermelon has certain benefits, but should pay attention to the appropriate amount.