针对粮食运输过程中的破碎问题,结合玉米籽粒在港口运输过程中的工艺流程,具体分析了造成其大量破碎粉化的原因.并在试验研究的基础上提出了在这一过程中皮带输送机机头处的高速碰撞、溜管的结构设计、溜管材质的选择、高仓入料时的剧烈碰撞等是造成玉米籽粒破碎的关键原因.根据上述分析研究,文中结合具体情况提出了相应的改进措施. Aiming at the problem of broken grain in the course of transportation and the reason of the massive crushing and pulverization caused by corn grain in the process of port transportation, the article analyzes the causes of crushing and pulverization in the process of grain transportation.And on this basis, The high-speed collision at the nose, the structure design of the slide tube, the selection of the material of the slide tube, and the violent collision at the time of entering the material in the high position are the key reasons for the breakage of the corn grain. According to the above analysis and research, improvement measures.