Cranial defects are mostly caused by cranial injury or firearm penetrating injury, and some patients have residual bone defects due to surgical decompression or resection of diseased cranium. Defects over 3cm in diameter, especially those located in the frontal area, are often associated with one or another symptoms, such as dizziness, headache, local tenderness, irritability, restlessness, etc.; or patients are afraid of the pulsation, expansion, collapse of the defect area, fear of sunlight, fear of vibration and even fear of loud noises, and often have poor self-control, concentration and memory loss. At present, there are two kinds of repair materials available for cranioplasty: autologous tissue and allogeneic material, the former using the patient’s own ribs, iliac bone or cranial bone, and the latter being polymer and metal implant materials such as titanium plate and titanium mesh. We use autologous cranial plate to repair small cranial defects, and for large defects, in some places where the skin is weak, such as on the eyebrow, we can also use the combination of autologous cranial bone and titanium plate to repair, which can avoid the rejection of allogeneic materials, skin breakage, exposure of allogeneic materials and other problems, and at the same time can avoid the deformity of the donor area, which is a more ideal method of defect repair.