With the continuous progress of society, the continuous development of economy and the acceleration of urbanization, the construction industry has also developed vigorously. In the civil building foundation structure, it is inseparable from the use of mass concrete. Only by ensuring that the structural strength, crack resistance and bearing capacity of mass concrete meet the requirements, can we improve the quality of civil engineering buildings. The construction technology of mass concrete structure in civil engineering buildings is analyzed. The society has put forward more and more stringent requirements for the construction technology of civil engineering, and civil engineering construction technology is the core technology in engineering construction. In recent years, although civil engineering construction technology has developed rapidly and achieved certain achievements and results, most of the technologies are imported or referenced by western technologies, which are lack of innovation, and some of them are relatively backward, wasting a lot of manpower, material and financial resources, resulting in waste of resources, unqualified construction quality and other phenomena. Therefore, in order to better apply civil engineering and improve its construction effect and quality, it is necessary to innovate the construction technology. In the actual construction process, it is necessary to innovate the civil engineering construction technology, so that the engineering construction industry can improve productivity and meet the needs of the development of social construction. Promote the good development of society. This paper will discuss and study the civil engineering construction technology, in order to improve the building quality and economic benefits of the construction industry, and bring some enlightenment to the innovation of civil engineering construction technology.