A hairy food is a concept in Chinese medicine that usually refers to foods that are too nutritious or irritating and are not good for recovery in people with infections or after surgery. Most grapes are not considered hairy, but grapes with a high sugar content may be hairy for some patients. Although grapes with high sugar content taste sweeter and are not harmful to the body when eaten sparingly, excessive consumption over a long period of time can cause an increase in blood sugar, which may increase the risk of infection and prolong the healing time of the wound. Therefore, post-operative patients, diabetic patients or patients with infectious diseases should avoid eating grapes that are too sweet. Normally, the fructose content of grapes is not too high, and they are rich in fiber, which makes them easy to digest. The anthocyanins and vitamin C in grapes have antioxidant properties. Grapes contain a small amount of melatonin, can also promote sleep, and grapes are sweet and sour, eat can improve appetite. Therefore, the proper consumption of grapes is beneficial to the body to a certain extent. For post-operative patients, diabetics and other people who want to eat grapes, you can choose some varieties of grapes with low sugar content and eat them in small quantities, which will not have too much impact on recovery or health.