The distribution of charge at the throat of the blast furnace is closely related to the furnace entry ratio of sinter， pellet and lump ore. In this paper，the motion behavior of charge particles under different iron-containing charge structures is studied，and the synergistic influence of the interaction between iron-containing charge composition and ore coke on the distribution characteristics of the furnace charge is analyzed. The results show that，when the total mass fraction of pellets and lump ores is less than 32% ，the particle flow trajectory is stable. Center coking minimizes radial segregation of ferrous charges. At the interface of the ore coke layer，the accumulation and penetration behavior of ore particles is observed. When the proportion of pellets is high，ore particles are easy to penetrate into the void structure of the coke layer，which in turn reduces the porosity of the ore-coke mixed layer.