The 2022 4th International Conference on Information Science and Electronic Technology (ISET 2022) was planned to be held in Chongqing, China during June 25-26, 2022. Currently, the entire world is struggling against the virulent pandemic COVID-19. Our conference was changed to be held online. This approach not only reduces people gathering, but also meets their communication needs.
 The objective of ISET 2022 is to provide a platform for researchers, engineers, academicians as well as industrial professionals from all over the world to present their research results and development activities in information science, computer applications, electrical engineering and electronic technology. This conference provides opportunities for the delegates to exchange new ideas and application experiences face to face, to establish business or research relations and to find global partners for future collaboration. Nowadays, the research and development level and industrialization scale of advanced information science and electronic technology have become an important symbol to measure the economic and social development, scientific and technological progress and national defense strength of a country or region.
 There were over 80 participants attended ISET 2022. During the conference, the conference model was divided into three sessions, including oral presentations, keynote speeches, and online Q&A discussion. In the first part, some scholars, whose submissions were selected as the excellent papers, were given about 5-10 minutes to perform their oral presentations one by one. Then in the second part, keynote speakers were each allocated 30-45 minutes to hold their speeches. Their insightful speeches had triggered heated discussion in the third session of the conference. Every participant praised this conference for disseminating useful and insightful knowledge.
 We would like to acknowledge all of those who have supported ISET 2022. Each individual and institutional help were very important for the success of this conference. Especially we would like to thank the organizing committee for their valuable advices in the organization and helpful peer review of the papers.
 The Conference Scientific Committee
 Chongqing, China