The pain in the left heel is indicative of the following diseases: first, common osteophytes are very common, occurring more often in middle-aged and elderly patients, also known as degenerative bone changes. x-ray examination can clearly diagnose, manifesting as local bone spur formation, and the typical symptom is pain, especially when moving in an upright position, the symptoms will be more obvious. In mild cases, conservative treatment is the main option, while in severe cases, surgery is required. Second, some patients are caused by vascular diseases, especially those with inadequate arterial supply, lower extremity atherosclerosis occlusive disease or vasculitis, which can lead to distal blood supply disorders due to vascular stenosis, typically manifesting as pain from ischemia. Usually the patient will also show obvious coldness and numbness, and after smoking or after activity will also lead to the aggravation of lower limb ischemia, and should change the bad habits and treat the symptoms.