Abstract: Most of sinter ore is cooled mainly by ring cooler in our country now, however, there are many problems with the ring cooler, just like air leak of the cooling system, heat loss in the surface of the cooling loop wheel machine, heat recovery is incomplete. For these problems, some experts put forward vertically-arranged sinter coolers with combinations of CDQ. In this paper, software Comsol was used to simulate the heat transfer process of gas and sinter in vertically-arranged sinter coolers, analyzed the influence of air-material ratio and porosity in vertically-arranged sinter coolers. The result show that, while the air-material ratio is between 1 280 m³/t to 1 760 m³/t and the porosity is 0.45, the vertically-arranged sinter cooler is in the best condition.