It is difficult to repair large area defects caused by complex crown and root fractures due to incomplete development of young permanent anterior teeth. Under the condition of preserving vital pulp, preserving tooth roots, and maintaining alveolar bone morphology as much as possible, defect repair should be performed on complex crown fractures through crown restoration, nanoresin restoration, veneer and full crown restoration. For teeth with crown root fracture, crown lengthening surgery, orthodontic combined traction surgery, surgical coronal reduction surgery, root preservation surgery, etc. are used to maintain the normal shape of the root, gingiva, and alveolar bone, and then crown restoration is performed above. In this paper, the above related surgery and treatment methods are analyzed, in order to provide some reference for clinical anterior crown root aesthetic repair treatment