In general, it is not acceptable to leave a fracture of the base of the fifth metacarpal bone unfixed, which may lead to conditions such as delayed or non-union of the fracture and damage to the surrounding tissues. 1. If the fracture of the base of the fifth metacarpal bone is not immobilized, it may allow the fracture site to continue to move, which may aggravate the symptoms and lead to prolonged healing or non-healing of the fracture. At the same time, failure to immobilize the fracture may result in displacement of the fracture, which may cause damage to the surrounding tissues. 2. Fractures of the base of the fifth metacarpal should be fixed externally or internally by surgery. When recovering, one should pay attention to keep quiet and keep balanced nutrition, and eat less spicy and stimulating food. If the fracture of the base of the fifth metacarpal bone occurs, it should be immobilized under the guidance of the doctor, such as playing a plaster, and then carry out the relevant treatment.