The roots of young permanent anterior teeth are not yet fully developed, and the living pulp is the main tissue that ensures the continued development of the roots, so the preservation of the living pulp is the basic principle of the treatment of traumatic crown fracture. Therefore, correctly mastering the indications of various treatment modalities for traumatic crown fracture, correct operation methods, and regular review are the keys to treating crown fracture of young permanent anterior teeth. Since the dentin of young permanent teeth is thin, the pulp angle is high, and the number of dentin tubules per unit area is large, external stimuli such as physical, chemical, and microbial stimuli can easily pass through the dentin tubules and cause the pulp to have adverse reactions. Indirect pulp capping is the best method for crown fracture without pulp exposure. Young permanent teeth with exposed pulp have rich apical blood flow and strong resistance to infection, so the infected pulp tissue can be removed, and the preservation of the living pulp is more likely to be successful. To preserve the living pulp, it is necessary to grasp the opportunity of treatment in time, the more timely treatment, the better the prognosis of the pulp. Strictly aseptic operation in the treatment, to prevent the pulp from being torn off when breaking the pulp, and to correctly place the pulp capping medication. Factors affecting the survival of the pulp of the affected tooth include: the size and direction of the force applied to the affected tooth during trauma, and the degree of damage to the blood vessels in the apical region. After the crown fracture of permanent teeth for live pulp cutting or pulp capping surgery should be tracked and observed, found that the pulp condition changes, we should adjust the treatment method in time, in order to receive the best therapeutic effect. For young permanent teeth with pulp infection, the root canal disinfection and induction drugs should be used to restore the vitality of the apical pulp or papilla so that the root tip can continue to form, or to control root canal infection, eliminate periapical inflammation, restore the vitality of the epithelial root sheath, so that the root end can be closed, and to promote root re-development.