Hidden pain in the center of the foot after walking may be caused by physiological factors such as walking too much, or it may be caused by pathological factors such as fasciitis and flatfoot syndrome. 1. Physiological factors: if you walk too much or long time weight bearing, resulting in excessive foot force, causing foot soft tissue tension fatigue, there will be a vague pain in the heart of the foot symptoms, without special treatment, adequate rest or hot water foot soak can be relieved. 2. Fasciitis: due to long-term walking, walking posture abnormalities, extrusion and other chronic strain factors can lead to plantar soft tissue aseptic inflammation, causing fasciitis, there will be a vague pain in the ball of the foot after walking. 3. Flat foot syndrome: flat foot is a foot deformity in which the medial longitudinal arch of the foot collapses, mostly due to congenital factors, trauma, chronic strain and other factors, the main clinical manifestations of the foot pain symptoms after walking for a long time or weight-bearing. There are many other causes of pain in the ball of the foot after walking, it is recommended to go to the hospital in a timely manner, after clarifying the cause of standardized treatment, so as not to delay the condition.