At present, the standard system of agricultural mechanization in China faces some problems such as loose-standard, inadequate integrity, unbalanced development and so on. Based on the investigation and analysis of the existing agricultural mechanization standard system, this paper mainly considered the necessity of the agricultural mechanization standard system development. The 3-D framework consisting of field, product, type of standard of agricultural mechanization was designed by using analytic hierarchy process and 3-D structural method. 