This volume constitutes selected papers presented at the First International Congress on Communications, Networking, and Information Systems, CNIS 2023, held in Guilin, China, in March 2023. The 8 full papers and 2 short papers presented were thoroughly reviewed and selected from the 32 submissions.

Communications and Networking.- Deep reinforcement learning based vehicle selection for asynchronous federated learning enabled vehicular edge computing.- A Virtual Community Healthcare Framework in Metaverse Enabled by Digital Twins.- An improved LED aruco-marker detection method for event camera.- Improvement Of CenterNet Based On Feature Pyramid Networks.- Information Security Protection Techniques for Substation Operation and Maintenance Edge Gateway.- A Robust MOR-Based Secure Fusion Strategy against Byzantine Attack in Cooperative Spectrum Sensing.- Security Analysis of Blockchain Layer-one Sharding based Extended-UTxO Model.- Information Systems and Artificial Intelligence.- Fundamental Frequency Removal PCA Method and SVM Approach Used for Structure Feature Distilling and Damage Diagnosis.- Stock trend prediction based on improved SVR.- Several Misconceptions and Misuses of Deep Neural Networks and Deep Learning.