Agricultural and rural informatization is an important part of national economy and social informatization,and the application of big data in agriculture has provided new technical means for agricultural and rural informatization construction. This study sorts out the current situation of agricultural and rural informatization construction at home and abroad, points out the existing problems, and analyzes the trend of agricultural and rural informatization construction under the background of big data. On this basis, the proposal of agricultural and rural informatization construction was put forward.