Tendon adhesion for more than 3 months may be difficult to restore function through functional exercise, and can be treated by surgery to release the tendon to restore function. Tendon adhesion is a common complication after tendon injuries and surgeries, mainly manifested as pain and joint mobility disorders, which can be caused by the lack of timely functional exercises and inflammatory reaction of soft tissues within three months after surgery. Tendon adhesion release surgery is generally used for patients who develop tendon adhesion 3-6 months after tendon suture or grafting surgery. Tendon adhesion restricts the movement of the fingers due to tendon adhesion, and tendon adhesion release surgery can be performed to relieve the symptoms after surgery. The surgery can be performed through the original incision to expose the grafted or sutured tendon, remove the scar tissue, and close the wound after sharp debridement of the adhesions, and extension and flexion exercises can be started 24 hours after the surgery. Tendon release surgery is not a permanent solution, scientific and reasonable functional exercises are also essential, otherwise it may cause re-adhesion. If the tendon adhesion is more than 3 months old, the patient should go to the hospital in time for review, and make a targeted treatment plan according to the condition, so as to avoid delaying the condition.