Reconstructive restoration of heavily resorbed alveolar bone is currently an academic challenge. Many elderly full denture patients often suffer from poor denture retention and pain due to osteoporosis and physiological resorption of the alveolar bone. At present, there are many scientific and advanced methods to repair in the clinic. 1, special design of the occlusal surface: the choice of improved fit can improve the stability of the denture and the tolerance of the occlusion. 2, the design of the tissue surface: the use of soft lining materials of the denture can improve the retention force. 3. Design of mucosa and alveolar bone: the application of micro-implants can significantly improve the retention force of difficult complete dentures, which has an immediate effect.