The pain in the middle of the foot when pressed may be caused by plantar fasciitis, or it may be caused by bone spurs in the heel bone. 1. Plantar Fasciitis: There is a thick layer of connective tissue covering the soles of the feet called the plantar fascia, which has the function of cushioning the body weight and reducing the pressure on the soles of the feet. As a result of more walking and relatively poor circulation in the soles of the feet, the plantar fascia has aseptic inflammation, causing pain symptoms, and the symptoms may be further aggravated by external pressure and stimulation. 2. Heel bone spur: the plantar fascia is attached to the heel bone at one end and to the proximal phalangeal joint at the other end. The heel bone may be due to degenerative lesions or long-term strain injury bone spurs, that is, bone hyperplasia manifestation, external pressure due to the plantar fascia for the heel bone of the pulling effect, may appear in the middle of the sole of the foot partial heel bone part of the symptoms of pain. The pain in the middle of the sole of the foot when pressed may also have other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.