With the continuous expansion of the scale of civil engineering construction, the geological conditions encountered are becoming more and more complex, and the construction technical requirements and mechanization degree are constantly improving. Civil engineering construction is mostly field operations, including both flat and high-altitude operations, both water and underwater operations, and the uncertainty of the construction environment. How to ensure the safety has become one of the key factors for the successful completion of the project. "Production must be safe, safety for production", in the construction of production must adhere to the "safety first" and "quality first" policy. In view of the wide range of civil engineering safety production, many influencing factors, high technical requirements, this book strives to solve the safety problems in construction practice from the perspective of engineering technology.