In recent years, massive open online courses (MOOC) have been rapidly popularized in China, which is both an opportunity and a challenge for the teaching reform of higher education in China. In order to respond to the call of "golden course" of the Ministry of education and reform the top-level design and teaching quality evaluation system of civil engineering online open courses under the background of "new engineering", based on AHP Group Decision Method, taking the expert questionnaire results as the data source, this paper selects Excel software for auxiliary calculation, and constructs a system, which includes 4 primary indicators including course foundation, course setting, course implementation and course effect, 12 secondary indicators and 35 tertiary indicators. The results show that the system has strict logic and strong feasibility. It can effectively evaluate the teaching quality of civil engineering online open courses and help the reform of online and offline mixed teaching mode in colleges and universities.