A linear fracture is a relatively minor fracture in terms of the shape of the fracture line, which is usually undisplaced. The common linear fracture is the skull cap linear fracture, which is a skull fracture of the skull cap that occurs under the action of external forces such as industrial and mining injuries, without displacement, and has a very high incidence in craniocerebral trauma, often combined with intracranial brain parenchyma injury. Etiology: Work and mining injuries occur under the action of external forces, direct violence such as car impact on the calf leads to tibiofibular fracture, indirect violence such as sudden kneeling when the quadriceps muscle contracts violently leading to patellar fracture, cumulative strain injury: such as long-distance marching prone to fracture of the second and third metatarsals. There are many reasons for fractures, so attention should be paid to identifying the cause, asking about the cause, symptomatic treatment, to see if there are other causes, pay attention to the timely removal of wound fixation. Diet: It is appropriate to eat: 1. foods rich in high quality protein; 2. foods rich in calcium and phosphorus; 3. dietary fiber foods. Not suitable to eat: 1, avoid eating greasy food: such as fatty meat, lard, mutton oil; 2, avoid eating spicy and stimulating food: such as spicy strips, pepper, raw garlic; 3, avoid eating food that is not easy to digest: such as rice cake, rice poop, rice cake.