There are two sets of teeth in a person’s life, milk teeth and permanent teeth, and having a mouthful of healthy teeth is the happiness of people’s life. However, due to various factors such as heredity, oral diseases, trauma, etc., treatment is not timely, and they have to be extracted one by one or fall out on their own. After the loss of the last tooth, the proprioceptors and stable occlusion are also lost, the loss of muscle power, the uncertainty of the vertical distance and the horizontal jaw relationship, the loss of the natural teeth and the loss of the alveolar bone that can provide stability for a large number of prostheses, which makes it impossible to recognize the food, and all of this These may lead to weight loss and many other diseases. On June 13, 2007 China’s Ministry of Health released the results of the latest Third National Oral Health Epidemiology Sample Survey, which showed that 6.8% of the elderly were completely edentulous. A new, beautiful, functional full denture can make a huge difference to a patient’s social life, sense of health, and quality of life, but diagnosing and fabricating a full denture restoration can sometimes be difficult because of the patient’s unique physical and mental condition, and prosthodontists have to find ways to make an aesthetically and functionally acceptable full denture for an older adult who is physically challenged, mentally anxious, or economically challenged. Prosthodontists can not change the changes brought about by old age, only to reduce the impact of these changes, the patient can not restore the aesthetic and functional level of natural teeth, but for most patients, a certain degree of aesthetics and functionality can be achieved, full denture is not the loss of the natural teeth of the replacement, but the toothless oral restorations. Therefore, a satisfactory complete denture is a joint effort of the prosthodontist, the technician and the patient’s physical and emotional control.