The two-volume set CCIS 1959 and 1960 constitutes the refereed post-conference proceedings of the 38th CCF National Conference on Computer Applications, CCF NCCA 2023, held in Suzhou, China, during July 16–20, 2023. The 39 revised full papers presented in these proceedings were carefully reviewed and selected from 197 submissions. The papers are organized in the following topical sections:Volume I:Artificial intelligence and application. Volume II:Data science and technology; pattern recognition and machine learning; network communication and security; frontier and comprehensive applications.