To determine whether a finger is fractured or sprained, the symptoms of the finger injury, imaging tests and other comprehensive judgment. 1. Symptoms after finger injury: finger fracture and sprain, the pain is more intense, accompanied by tenderness, percussion pain, etc., and the local swelling is very strong, there will be obvious bruising. If the fracture is dislocated, there will be finger deformity. 2. Imaging examination: Through X-ray and CT examination, the presence and severity of the fracture can be clarified, as well as whether there is joint dislocation or displacement of the fracture. If the finger is sprained, the fracture line will not be visible on imaging. Whether it is a finger fracture or sprain, it is recommended to consult an orthopedic surgeon in time for analysis and diagnosis, and cooperate with the treatment in time.