Guava, also known as guava, is a common fruit in the tropics, as it is a common food, does not have the efficacy and effect of drugs, and does not have the contraindications of drugs, the general population can be eaten. Guava as a fruit is low in calories. Each 100 grams of guavas contains 53 calories, of which 14.2 grams of carbohydrates, between 1 gram and 2 grams of protein, and less fat, about 0.4 grams. Guavas are rich in fiber, with 5.9 grams of fiber per 100 grams of guavas, which is very prominent among fruits. Guavas can supplement certain calories and sugar for the human body, while the high fiber content in guavas can promote intestinal peristalsis, and constipated patients can moderately increase the amount of consumption. Meanwhile, people with hypercholesterolemia and those who need to lose weight can also add guavas to their food list. The number of people who are allergic to guavas is relatively small, but if an allergy occurs, please consult a doctor promptly.