Timely and effective treatment of hammertoe is usually good and curable, but those who are not treated in time or who do not undergo effective treatment have a poor recovery. So, it is not a matter of probability. Hammer finger is the inability of the terminal interphalangeal joint of the finger to be actively straightened, which most often occurs after the tip of the finger suddenly strikes an object, due to the distal end of the extensor tendon attached to the terminal phalanx at the base of the end phalanx caused by the avulsion of the end of the tendon stopping point of the stopping point of the tendon, sometimes accompanied by the tendon stopping point of the bone piece together. Timely surgical treatment is the most effective means of treatment. Surgical suture of the avulsed tendon stop, postoperative fixation in the straight position, and systematic functional exercises at a later stage can lead to a satisfactory recovery, and there will be no loss of finger function. However, if the treatment is not timely or effective, the contracture of the distal end of the tendon will be difficult to achieve satisfactory results even if surgery is performed at a later stage to remedy the problem. If the diagnosis of hammer finger is confirmed, it is recommended to follow the doctor’s advice and standardize the treatment in time.