Rupture of the flexor tendons is a relatively common clinical condition, mostly due to direct or indirect violence. The most common site of occurrence is in the finger. After the occurrence of finger flexor tendon rupture, there will be localized swelling and obvious pressure pain, and the most obvious symptom in clinical examination is the limitation of finger flexion and normal extension. The most obvious symptom on clinical examination is limitation of finger flexion and normal extension. In this case, the patient should go to the hospital, and the degree of flexor tendon rupture can be clearly diagnosed after the doctor’s examination and the MRI film of the finger area. If the rupture is partial, the flexor tendon can be immobilized in the straightened position and heal naturally in about 6 weeks. If it is a complete rupture, surgical treatment is considered with an incisional flexor tendon repair. Postoperative immobilization in the extensor position is given, and clinical healing usually occurs 6-7 weeks after surgery.