Welcome to join in the 2021 10th International Conference on Computer Technologies and Development (ICCTD 2021), which will be held in Barcelona, Spain during October 15-17, 2021. For papers submitted to ICCTD 2021, we offer the publications as following: 1. Publication in Conference Proceedings. Submissions will be peer reviewed by conference committees, and accepted papers will be published in conference proceedings, which will be indexed by EI Compendex, Scopus, etc. 2. Publication in Journal. Submissions will be reviewed by the conference committees and IJFCC editorial board, and accepted papers will be published in International Journal of Future Computer and Communication, which will be indexed by EI (INSPEC, IET), Google Scholar, etc. There are two methods for submitting your paper: 1.By our electric system: https://cmt3.research.microsoft.com/ICCTD2021 2.By our contact email box: icctd@iacsitp.com Please feel free contact with us: Yoyo Zhou (Conference Secretary) E-mail: icctd@iacsitp.com Tel: +86-28-86512185 For more information about international conferences, please visit our conference website: ICCTD 2021 website: http://www.icctd.org/index.html