Tendinitis is primarily caused by long-term engagement in certain activities, such as prolonged use of mobile phones and mice, which can lead to frequent tendon movement within the tendon sheath, causing traumatic inflammation, and resulting in symptoms such as tendon and tendon sheath swelling, pain, and limited mobility. Treatment for tendinitis is mainly divided into non-surgical and surgical treatments. Non-surgical treatment mainly involves rest, the use of anti-inflammatory and analgesic medications, and treatment methods such as hot compresses, physical therapy, and local injections. These can effectively help improve symptoms of pain and swelling and reduce inflammation. When conservative treatment is ineffective or when there is a dysfunction in mobility, surgical treatment may also be considered.