Objective To analyze implant survival rate and incidence rate of complications after All⁃on⁃4 implanta⁃ tion, and to discuss the technical points and consideration of All⁃on⁃4. Methods According to the criteria of inclusion and exclusion, 23 cases treated with All ⁃ on ⁃ 4 immediate restoration were referred, from January 2007 to December 2015, including 5 cases of edentulous maxillary, 14 cases of edentulous mandibular and 4 cases of both maxillary and mandibular were edentulous. All the patients received immediate function with provisional prostheses at the surgery day. Definitive prostheses were delivered to patients after 3⁃6 months post operation and follow⁃up visits were performed up to 9 years (average 3 years) after placement of definitive prostheses. Results In this study, the rate of implant re⁃ tention of 108 implants and 27 final restorations was 100% until the last review. Among the 23 patients, 3 patients had complications and the incidence of complications was 13.0%. Conclusion All⁃on⁃4 is an effective and reliable meth⁃ od in the treatment of dentures denture. The incidence of complications is low. All⁃on⁃4 is a practical method.