Abstract: To secure the quality of rice during static storage, it is of great significance to study the static storage process of grain piles under different initial wet base moisture conditions. In this study, based on the local heat balance and the heat-moisture coupling theory of porous media, a mathematical model of heat and mass transfer for the grain pile was established. In order to make the study closer to the actual grain storage environment, the boundary condition was set to the dynamically changing ambient temperature of the atmosphere. The finite element software COMSOL Multiphysics was used to simulate the heat and moisture coupling transfer process of a pilot-scale cylindrical granary with a height of 6 m and a diameter of 3 m under the conditions of initial wet base moisture of 14%, 16% and 19% in autumn-winter and spring-summer. Since the cylindrical granary was an axisymmetric model, the section along the diameter of the granary was selected as the calculation region. In order to obtain the temperature and moisture content at a specific position inside the grain pile, three detection points were selected. The results showed that the temperature distribution of the grain pile in autumn and winter changed from cold-hot-warm to cold skin-hot core state under the above three working conditions. When the grain pile was stored for 150 days in spring and summer, the local temperature exceeded 35℃ (|x|>1.0m,5.5 m<y<6.0 m), which was a high temperature grain storage state. For long-term stored grain piles, the external temperature and the rice respiration had a continuous effect on the heat and moisture transfer of grain piles, and this effect had a great relationship with the initial moisture content of the grain pile. For the grain pile with initial wet base moisture of 19%, the peak temperature under static storage conditions was greater than that of the initial wet base moisture of 14% and 16%. During the storage in spring and summer, the temperature rose of the three detection points of the grain pile with an initial wet base moisture of 19% was relatively small, but the grain pile was still in a high temperature state. Under this condition, the activity of the grain pile was relatively high, the amount of respiration and heat dissipation was large. The grain pile was in the dangerous storage state with high temperature and high moisture content, which will reduce the quality of rice.