Banana shakes are usually harmless, but consuming them in large quantities may cause gastrointestinal discomfort. Banana milkshake is usually a drink made of banana and milk, mainly containing carbohydrates, protein, fat and other elements, moderate consumption is not harmful to the body, but also as a source of sugar and water supplementation. However, it is not advisable to consume too much of it, as it may aggravate the burden on the stomach and intestines, leading to abdominal pain, bloating and other uncomfortable reactions. In addition, it should not be consumed by those who are allergic to bananas and milk. Banana milkshake is recommended to use fresh and clean ingredients to make, but also as early as possible to drink, to avoid the use of spoiled ingredients to make milkshake or long time storage caused by the deterioration of banana milkshake. If you feel unwell after consuming it, you should go to the hospital for checkups in time.