A combined ventilation system,horizontal aeration combined with vertical aeration, was tested in the rice warehouse with capacity of 1750 tons, which was installed thehorizontal and vertical aeration system. The preliminary study results showed that after ventilation in winter, the moisture of the newharvest rice decreased from 14.0% to 13.5% on average, moisture reduced 0.5%; the averagegrain temperature decreased from 28℃ to 4℃, temperature reduced 24℃. To reducegrain moisture and temperature by combined ventilation withhorizontal and vertical systems in winter is feasible,high efficiency, whichhas agood prospect of application.