Abstract: At present，production of main crops in Tianjin has basically achieved mechanized operations in cultivation，planting and harvesting links，but whole process mechanization production still has great room for improvement.Development and changes of whole process mechanization of Tianjin′s main crop production in the past ten years and highlights of Tianjin′s work in promoting development of whole process mechanization were expounded.In view of main problems existing in process of development，some countermeasures and suggestions in terms of technological thinking mode，technological force focus，industrial service chain and policy direction，were put forward.