Abstract: Hannover international agricultural machinery exhibition is the largest and most influential exhibition of agricultural machinery in the world.And it was known as wind vane for the development of international agricultural machinery.Trend that world agricultural machinery in the direction of large-scale，specialized and intelligent was summarized through visiting 2017 Hannover agricultural machinery exhibition.Development trend of main products including tractor，grain harvesting machinery，silage harvester，sowing machinery，ploughing machinery，plant protection machinery，herbage machinery and economic crop harvester was introduced.Thinking and suggestions on the development of agricultural machinery in China were put forward.