Technological thinking is rooted in social material living conditions. Xu Guang qi is a master of ancient Chinese agricultural science and technology thoughts. He has conducted in-depth research on technical methods. The method of seeking truth from facts that is "appropriate on time" is the foothold of Xu Guangqi’s agricultural technology thinking; The "Kyushu Eight-Eyes and Five Systems" system methodology is the basic principle of Xu Guangqi’s agricultural technology methodology; The practical methodology of "exploring the heavens and the people, all of them are practical" is the value of Xu Guangqi’s agricultural technology thought. The research on Xu Guangqi’s agricultural technology methodology is conducive to further exploring the value of Chinese excellent traditional ideology and culture, and also has important enlightenment and reference value for us to carry out modern agricultural production and ecological civilization construction.