Tendovaginitis in children is now mostly treated with local anesthesia and is a minimally invasive procedure, with insignificant pain during the operation and slight pain after the operation, which is mostly tolerable. However, generally speaking, tendovaginitis does not require surgical treatment. Tendovaginitis in children is mostly caused by congenital deformity, but also by trauma, overwork, etc. Congenital deformity is most common in the thumb, followed by the middle finger, which usually does not heal on its own, and requires surgical treatment. Stenosing tenosynovitis can be treated with massage, physiotherapy, heat, and ibuprofen for pain relief if necessary. Severe stenosing tenosynovitis requires surgery, mostly under local anesthesia to loosen the stenosis, and the pain is usually not obvious. After the surgery, some children may have pain, but it is mostly tolerable, parents do not need to worry too much.