White vinegar for tendinitis is false and is not based on science. White vinegar is a food and does not have the effect of treating the disease. Tendovaginitis is mainly treated with general treatment, medication and surgery. 1. General treatment: patients with tenosynovitis should rest more and reduce the activity of the lesion; the affected area can use ice or heat to relieve the symptoms; external fixation can be used to protect the affected limb. 2. Drug treatment: for patients with obvious pain, ibuprofen, acetaminophen and other drugs can be used to relieve pain. Or use lidocaine, procaine, hydrocortisone and other drugs for local closed treatment. The use of drugs need to follow the doctor’s instructions. 3. Surgery: For patients whose non-surgical treatment is ineffective or ineffective, tenotomy and decompression can be performed. Relieve the patient’s symptoms and restore joint function. White vinegar does not have the efficacy of treating tenosynovitis. It is recommended that the patient go to the hospital in time, under the guidance of the doctor for treatment.