The pain when pressing the bone behind the heel may be caused by plantar fasciitis, heel bone fracture, osteomyelitis and other factors. 1. Plantar fasciitis: long time standing, running, etc. can lead to overstrain of plantar fascia, local aseptic inflammation, causing heel pain. 2. Heel bone fracture: Impact on the ankle may lead to heel bone fracture, resulting in heel pain, pressure pain and other symptoms. 3. Osteomyelitis: Osteomyelitis caused by purulent bacterial infection of the bone cortex, cancellous bone and bone marrow tissue of the heel bone, which can lead to local redness, swelling, heat, pain, pressure pain, and in severe cases, high fever and other systemic toxic symptoms. The bone behind the heel may also have other pathological factors, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.