ICCC is initiated in 2015. It is co-sponsored by Sichuan Institute of Electronics and IEEE, hosted by Southwest Jiaotong University, University of Electronic Science and Technology of China, Sichuan University, Chengdu University of Technology, Chengdu University of Information Technology, etc. As annual conference, it will be held in Chengdu every year, where more than 500 attendees from 12 countries all around the world have taken part. 2023 IEEE the 9th International Conference on Computer and Communications (ICCC) will be held in Chengdu, China once again on December 8-11, 2023. On behalf of the Organizing Committee, we warmly invite you, Computer and Communications scientist, engineer or technician, graduate student, or simply interested by the technique, to take part in this unique and innovative conference with your enthusiasm to develop, your desire to apply and your willingness to mature the Computer and Communications technique and their applications.