The pain under the foot can be caused by the following reasons: first, plantar fasciitis, plantar fasciitis is often caused by cold, strain, and can appear pain under the foot, then early examination and examination to exclude other diseases for diagnosis. Second, metatarsophalangeal headitis, metatarsophalangeal headitis patients can appear at the metatarsal head of the foot pain, often due to long-distance walking, strain, then early examination, foot x-ray, to early diagnosis and treatment. Third, the plantar fat pad inflammation, plantar fat pad inflammation can also appear under the palm of the foot pain, often due to chronic injury, it is necessary to conduct early medical examination for diagnosis and treatment. Fourth, fatigue fracture, when the metatarsal bone of the foot has fatigue fracture, can also appear under the palm of the foot pain, then to early examination of the foot X-ray and CT to diagnose and treatment.