Whether or not an ingrown base fracture of the metacarpal bone can heal on its own depends on the degree of ingrownness. If the embeddedness is mild, it can be healed by itself; however, if the embeddedness is obvious, resulting in a comminuted fracture of the base of the metacarpal bone, it cannot be healed by itself. If the fracture of the base of the metacarpal bone is mild, it can be healed in about 3 months after manipulation and external fixation with a plaster cast. However, it is necessary to pay attention to the regular review to make sure whether the fracture end is displaced or not, and to carry out gradual functional exercises to promote the recovery of the fracture in a timely manner. If the embedded fracture of the base of the metacarpal bone is more serious, resulting in a comminuted fracture of the base of the metacarpal bone, and the displacement of the joint surface is obvious, then under normal circumstances, it is impossible to heal, and is prone to dysfunction and traumatic arthritis, shortening of the fingers, and deformity of the fracture healing and other complications, this kind of situation needs to be treated with surgery to restore the original anatomical structure of the fracture, and early functional exercises to promote the recovery of hand function. If the fracture of the base of the metacarpal bone is embedded, it is necessary to consult an orthopedic surgeon as soon as possible, and the treatment should be standardized under the guidance of a doctor.