Abstract: From the new opportunity of the agronomy major under big data time, training the space thought of agriculture for the student of agronomy, innovating the original teaching content and so on, This article expounds the necessities of the construction of GIS course for agronomy major. The constructions of GIS need to be built a course constructions and reform system, which takes reforming theoretic teaching contents as the core, depends on reforming practical teaching, and takes using the suitable teaching method and examination method as the supplementary.