In general, as long as there is no allergy, bananas and crabs can be consumed together and will not cause any harm to the organism. Bananas have a high carbohydrate content and contain a variety of minerals and vitamins needed by the human body. Every 100g of bananas contains about 22.8g of carbohydrates, 358mg of potassium, 8.7mg of vitamin C, 9 vitamin P, 9.8mg of vitamin B4, which is a good source of the above mentioned nutrients in addition to supplementing energy. There are more varieties of crabs, such as pike crabs, green crabs, river crabs, clear water crabs, etc., which are rich in proteins and trace elements, for example, every 100g of crabs contains about 13.8g of proteins, 400mg of chlorine, 260mg of sodium, 232mg of potassium, 208mg of calcium, 142mg of phosphorus, etc., and it can be used as a better source of the above nutrients. Banana and crab have high nutritional value and both can be consumed all the time. However, some people may have allergies to them, and should avoid eating them or eat them together, while other people can eat them normally, but they should also pay attention to the dosage.