Abstract: When grains enter the shallow silo, complex motion will occur. The motion is divided into two parts:One part is the movement of grain particles in the air, and the other part is the movement of particle on the small heap formed. This study analyzed the falling movement of corn particles in the silo from the perspective of kinematics. Meanwhile, MATLAB software was used to simulate the effects of different falling height, initial velocity, grain composition and mass flow rate on the basic parameters of particle falling movement. The results were as follows:For a certain variety of corn granules with zero initial velocity, the time required to reach the maximum speed in the falling process was 3.45 s. The speed at the moment was the settling speed, which was 14.51 m/s, and the settling distance of the grain was 35.86 m at this moment. When the falling height of particles was large enough, the falling speed of particles would not increase after increasing to a certain value and start to fall at a uniform speed, and the settling speed would be reached, which was the terminal velocity. In the process of grain particles entering the shallow silo, the larger the initial velocity of particles, the shorter the time it reached the settling speed, and the shorter the particle movement distance. In the process of falling, the settling speed of different components in grain was different, and the falling distance of various components was different at the same time. In the process of grain particles entering the silo, with the increase of mass flow rate and falling height, the air entrainment during the falling of grain particle group increased continuously. Compared with a single particle, the settling velocity of the particle group during the falling process was smaller. The research results can provide theoretical foundation for the cleaning process of silo and the design and optimization of auxiliary devices.