A method for digital archiving and manufacturing of dental prosthetics and a prosthesis, and teaching and training for the method are provided. The method mainly includes the following steps: preoperative scanning: creating a first digital model file; optical positioning and turning treatment: creating a second digital model file from a turning process; physical model calculation: creating reversely an autologous crown model file of a patient; and fixed denture manufacturing: manufacturing, according to the second digital model file and the autologous crown model file, a fixed denture that meets needs of the patient, so that an inner layer structure of a crown of the fixed denture can be tightly bound to an abutment, and it may be decided to retain an original crown contour according to needs. A tooth model based on a teaching digital model file can be used for teaching and training of a trainee with the foregoing method.