Metatarsal fractures are mostly caused by trauma. Metatarsal trunk fractures are usually not displaced much due to the support of the adjacent metatarsal bones. The 2nd and 3rd metatarsal necks are prone to occur and need to be distinguished from the unclosed epiphysis of this part. Its clinical manifestations: metatarsal fractures caused by trauma often present with local swelling and bruising, pressure pain at the fracture site, and limited walking. The clinical manifestations of metatarsal stress fractures are mainly localized pain, pressure pain, fatigue and weakness, and limitation of continued walking. x-ray can show fracture, but stress fractures do not show fracture until two weeks later, and there is periosteal hyperplasia reaction. The diagnosis of bone fracture is generally easier with a clear history of trauma and the superficiality of this bone, which is easy to examine, plus the x-ray shows generally clearer. The fracture of the base of the metatarsal bone may be difficult to recognize due to improper X-ray projection angle, and the clinical diagnosis should be the main focus at this time. Treatment 1. Fractures without displacement The affected limb is fixed in calf cast or short boot cast for 4-6 weeks after injury or repositioning. 2.Fracture with displacement Metatarsal head plantarflexion displacement is feasible in open repositioning, if the local insertion is stable, only supplemented by external fixation in plaster; if the fracture is still unstable after the alignment, it should be crossed and fixed with a kerf pin, and then removed after 7-10 days and replaced by a calf cast for braking. If the fracture of the metatarsal trunk is generally displaced, surgery is not required; if the fracture is severely dislocated, especially if it affects the arch of the foot, it should be repositioned by incision, and then fixed by wire, kerf pins or screws depending on the shape of the fracture line. Only very few patients need to undergo incision and internal fixation (small screws or Kirschner pins, etc.) for fractures of the base of the 5th metatarsal bone, and postoperative braking with a cast is still required. For less symptomatic stress fractures, elastic bandage fixation and appropriate rest for 3 to 4 weeks are possible, while plaster fixation is required for obvious fracture lines.