Abstract: With the progress of science, the development of automatic electrical registration form is also expanding. After reasonable installation of electrical instruments, can improve the degree of production automation of chemical engineering, improve production efficiency to a certain extent, so that enterprises get further development. The installation and technical adjustment of electrical instruments is a professional polar work, which has a profound impact on chemical production. Based on this, this paper analyzes the basic principles of installation of electrical instruments in chemical engineering, discusses the key points of installation and debugging of electrical instruments, and uses science and technology to ensure the accuracy and rationality of installation of electrical instruments and ensure the normal operation of electrical instruments, so as to promote the stable development of chemical production.