Communications in Computer and Information Science

This CCIS volume, constitutes the refereed proceedings of the 19th China Conference on Wireless Sensor Networks, CWSN 2025, held in Hangzhou, China, during September 6–7, 2025.The 36 full papers were included in this were carefully reviewed and selected from 66 submissions. They focus on the design, implementation, and application of IoT, the exchange and application of theories and technologies on IoT.