Abstract: Abstract: With the development of our country's economy and the progress of dental implant technology, more and more edentulous patients choose denture implant to restore masticatory function and improve the quality of life. Implant-supported fixed prostheses of edentulous jaw is favored by patients because of its beauty, comfort, better recovery of chewing and pronunciation function. According to its superstructure design, it can be divided into complete and sectional prostheses. Complete design has good repair effect and good prognosis, which has many advantages, such as less implant number, flexible implant location, reasonable stress distribution, and the best biomechanical environment etc. Therefore, this article reviews the research progress of implant-supported fixed complete prostheses for mandible edentulous.