The inextensibility of little finger fracture needs to be handled according to the degree of injury and different stages of treatment. After the fracture of the little finger is just broken, it should be promptly fixed by restoration and fixation, and after the fracture is healed, it should be promptly given to rehabilitation exercise and physiotherapy, as per the doctor’s instruction. In the early stage of little finger fracture, the inability to straighten may be due to dislocation or combined with joint dislocation, etc. According to the results of the radiographic examination, we should take manipulation and small splint fixation to correct the dislocation and restore the normal position of the bone, and if manipulation fails, we can take surgical restoration and internal fixation, and according to the condition of fracture healing after the surgery, we should take gradual rehabilitation and exercise, so as to promote the functional recovery of the little finger. After the fracture of little finger heals, if it can not be straightened, it may be caused by joint stiffness or adhesion, we should actively carry out rehabilitation exercise, activity of flexion and extension of little finger, with hot compresses, infrared rays, ultrashort-wave therapy, usually can be recovered. To summarize, if the little finger is not straight after fracture, it is necessary to make a comprehensive assessment according to different time stages after the fracture, and actively cooperate with the doctor’s treatment, so as to promote the recovery of finger function.