The main causes of left heel pain include degenerative lesions, aseptic inflammation and vascular lesions of the lower extremities. 1. Degenerative lesions: such as bone spurs, osteophytes, and even lumbar disc herniation can be referred to as degenerative lesions, mostly due to pain caused by abnormal tissue irritation of the periosteum or nerve compression. Most of the patients can get better after conservative treatment. 2. Aseptic inflammation: most left heel pain is caused by aseptic inflammation, such as fasciitis of the heel bone, Achilles tendonitis and so on. The triggers are due to repeated strain of the fascia, trauma or cold. Most of the treatment takes rest, physical therapy or oral non-steroidal anti-inflammatory analgesic drugs such as ibuprofen under the guidance of the doctor. 3. Lower extremity vascular diseases: such as atherosclerosis occlusive disease, vasculitis, etc., the formation of the cause is due to vascular disease resulting in distal blood supply disorders, pain. Most of them can be improved by internal medicine conservative treatment, and some of them need surgical intervention. Left heel pain may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then follow the doctor’s instructions for treatment.