Electrical engineering is the core discipline and key discipline in the field of modern science and technology. It is the core power to promote the development of electronic technology and the necessary guarantee to support the information age. Due to the modern people's life and work style changes with each passing day, so, in order to meet the service needs of different residents, electrical engineering must rely on modern unique control technology to realize its operation value. Based on this, combined with the system structure of electrical engineering, this paper interprets the core application content and value of modern control technology.