Cold fruit refers to cool fruit, which has the function of relieving dryness and heat, but you can't eat more, otherwise it will be harmful to your health. Chinese medicine believes that all foods can be divided into four categories according to their nature, namely "cold, cool, warm and hot", which is called "four natures" or "four qi" by Chinese medicine. The same is true of fruit. For example, we often say that "watermelon is cool, and eating too much will cause diarrhea", which refers to the food characteristics of watermelon-coolness.

Common cool fruits are cantaloupe, kiwi fruit, watermelon, pear, melon, banana, persimmon, grapefruit, water chestnut and pitaya. Generally speaking, people with hot constitution have vigorous metabolism in summer, sweat more, often have redness, dry mouth, irritability and constipation, and especially like to eat cold things, so people with hot constitution can eat more cold fruits appropriately. Generally, people with cold constitution or people with cold constitution are not easy to eat more, especially women can't eat more when they come to their holidays.