Eating bananas properly has the effect of promoting defecation, but food has no medicinal effect. Bananas contain a large amount of protein, sugar, vitamin A, vitamin C, dietary fiber, potassium, carbohydrates, phosphorus, selenium and other nutrients, which can replenish the nutrients needed by the human body, these substances can maintain the normal physiological function of the body. The dietary fiber it contains can help intestinal peristalsis and promote defecation. Its sweet flavor can increase patients’ appetite and satiety. Bananas contain a lot of sugar and carbohydrates, and eating a lot of bananas can easily lead to obesity. At the same time, because ripe bananas are rich in dietary fiber, a large amount of food may lead to accelerated intestinal peristalsis, diarrhea and other symptoms, it is not recommended to eat more. If there is repeated constipation, it is recommended to consult a hospital in time, under the guidance of a doctor to clarify the cause of the disease, standardized diagnosis and treatment.