For the treatment of extensor tendinitis of the foot, it is firstly important to rest and avoid intense activities to prevent exacerbating the symptoms, and also to avoid exposure to cold. When pain occurs, anti-inflammatory and analgesic medications can be used to alleviate inflammation and pain. Additionally, treatments such as hot compresses, foot baths, and physical therapy can be used to promote blood circulation and improve symptoms. Local block treatments can also be effective in relieving inflammation. When conservative treatments are ineffective or motion is restricted due to tissue adhesions, surgical treatment can be considered.