Smoking is not recommended after a fracture because the recovery of bone depends on the blood vessels on the periosteum. Cigarettes contain nicotine which causes vasoconstriction and affects the oxygen-carrying capacity of blood, which may lead to delayed healing of the fracture. During the recovery period after a fracture occurs, it is recommended to also take bone-building and blood-stasis-boosting herbs to promote blood circulation and facilitate the reduction of swelling. After a fracture, it is important to focus on prohibiting smoking and drinking alcohol, and to eat a light, absorbent and digestible diet with plenty of fresh vegetables and fruits. In addition, for patients with fractures, smoking can also adversely affect fracture healing, because the main component of smoke is nicotine, which affects systemic blood circulation, microcirculation, and vasoconstriction, thus affecting blood flow to the fracture end and affecting fracture healing. There are more factors that affect fracture healing, such as the blood flow to the fracture end, the reset of the fracture end, whether the fracture end is firm, whether attention is paid to protecting the affected limb by braking, and whether the affected limb is weight-bearing, etc. These factors should also be noted.