Pineapple is a common fruit in daily life, and there is no difference between cold and hot. Pineapple belongs to the genus Pineapple, family Bromeliaceae, which contains calcium, protein, vitamin C and other nutrients, including vitamin C and high water content, which can replenish the vitamins and water needed by the human body. The sweet and sour taste of pineapple can also stimulate salivary secretion, which has the effect of improving appetite. 100 grams of pineapple contains 50 calories, 13.12 grams of concentrated carbohydrates, 0.54 grams of protein, 0.18 grams of fat, 1.4 grams of dietary fiber. Pineapple can be irritating when eaten directly, as the bromelain in it can have an irritating effect on the oral mucosa and the tender epidermis of the lips. Soak the pineapple in salt water for a while before eating it, which can reduce the irritation to the oral cavity, and you can also eat a sweeter pineapple. Avoid excessive consumption of pineapple at one time as it may cause discomfort. Those who are allergic to pineapple should not eat pineapple.