Treatment principles: 1. Surgical treatment (1) Heel spur resection is suitable for those who have persistent heel pain and have bone spurs confirmed by X-ray. (2) Heel bone drilling is suitable for those with high intraheel pressure. The purpose is to lower the increased intraheel pressure and treat persistent heel pain without bone spurs. (3) Achilles neurectomy can be used for unexplained persistent heel pain. (4) Heel bursal resection is performed by removing the heel nodal bursa and the subacromial bursa of the heel. (5) The purpose of heel osteotomy for flatfoot is to increase the heel bone angle through heel osteotomy and to correct the heel bone that is turned out so that the heel bone has a good biological scaffold. 2.Physiotherapy 3.Medication Oral treatment with non-steroidal anti-inflammatory and analgesic drugs; injection of prednisolone acetate at pressure points, once a week, often cured in 2 to 3 times. Posterior heel bursitis often occurs between the Achilles tendon and the skin, caused by frictional injury, manifesting intracapsular fluid, swelling and pressure pain. Avoiding friction and intracapsular injection of prednisolone acetate are effective.