The hand surgery department of Beijing delconi orthopedic hospital has made a lot of basic and clinical work in hand injury function reconstruction, especially in tendon defect and reconstruction. He has accumulated rich clinical experience in the coverage of skin defects, the correction of limb deformities, hand tumors and other areas, and has relieved the pain of many patients for many years, which is highly praised by patients. Scope of diagnosis and treatment: hand and wrist strain diseases, various tenosynovitis, arthritis, etc; Excision of various tumors in the hand, contracture of palmar aponeurosis, tendon sheath cyst, giant cell tumor, etc; Various nerve entrapment syndrome and peripheral nerve injury of limbs.