Most fatigue fractures occur in the metatarsals, tibia and fibula, and ribs of the human body. Because the fracture is mainly related to regular stress, it is also called stress fracture. It is mostly seen in people who need regular weight-bearing, stress, and overload sports on both feet, and it is often found in athletes, military personnel, and people who often participate in long-distance running and cross-country, which is also called marching fracture. Fatigue fractures of the metatarsal bones are the most common type of fatigue fracture, mostly occurring in the first or fifth metatarsal bone, and most of them do not show significant abnormalities on preliminary plain film examination and are related to the frequent stress on the foot. Most of the fatigue fractures of the ribs are seen in elderly people with severe osteoporosis, mostly due to frequent and violent coughing, and fatigue fractures of the tibia and fibula, mostly in the middle and lower fibula and middle and upper tibia, which are related to long-term calf muscle contraction, frequent jumping, and violence transmitted through the foot to the calf. In clinical practice, it is possible to combine lifestyle habits, age, and specific pain sites, and if fatigue fractures are suspected, magnetic resonance imaging is feasible to avoid missed diagnosis and misdiagnosis.