"Building Weak Current Engineering and Construction" is one of the series of practical technical books on building electrical. With the rapid rise of intelligent buildings, weak current system engineering plays an increasingly important role in the construction of intelligent building projects. Weak current system engineering has also received more and more attention from all parties. "Building Weak Current Engineering and Construction" was written to meet this demand. The book is divided into eight chapters based on weak current subsystems, including communication systems, cable TV systems, automatic fire alarm and fire extinguishing control systems, security systems, building equipment automatic control systems, integrated wiring systems, and sound reinforcement systems. The book only provides a qualitative introduction to relevant technical issues, making "Building Weak Current Engineering and Construction" more readable and practical. "Building Weak Current Engineering and Construction" can be read by professional technicians engaged in the planning, design and construction of building intelligent systems, as well as managers of building owners, property management companies, and system integration companies. It can also be used as a reference book for teachers and students of related majors in colleges and universities.