Tendonitis is not recommended to be massaged. The tendon sheath is a fibrous canal that surrounds the tendon on the outside of the tendon. There is synovial tissue covering the outside of the tendon and the inner wall of the tendon sheath, with a cavity formed between the two layers of synovial tissue and filled with synovial fluid. Tendonitis is caused by excessive and repeated friction between the tendon and the tendon sheath, which can lead to hyperplasia and hypertrophy of the synovial tissue, and then hyperplasia and swelling of the tendon and tendon sheath fibroblasts, which is called tenosynovitis. The pathogenesis of tenosynovitis is due to repeated excessive stress friction between the tendon and the tendon sheath and the onset of the disease, force massage will further intensify the friction between the two, which can aggravate the process of the disease, so for tenosynovitis is not recommended to force massage.