Running arch pain may be caused by physiological reasons such as running distance is too long and shoes are not suitable, or it may be caused by pathological factors such as sciatica and arch disease. 1. Physiological reasons: a running distance is too long or people who have been running for a long time may cause acute and chronic injuries to the plantar fascia, resulting in the accumulation of lactic acid and other metabolic products in the plantar fascia area, which will stimulate the plantar nerve root and cause pain in the arch of the foot. In addition, if the choice of shoes is not suitable when running, it may lead to repeated impacts between the sole of the foot and the ground, which may also lead to the above symptoms. 2. Pathological factors: Various reasons cause the sciatic nerve to be compressed, and the symptoms of running arch pain may also appear, mainly because the sciatic nerve is pulled during the running process, common diseases such as pear-shaped muscle syndrome, lumbar intervertebral disc herniation, etc.; the arch of the foot itself has anatomical structure abnormality, it may also appear the above mentioned symptoms, such as flat feet, high arched feet and so on. Running arch pain may also have other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.