Aiming at such characteristics as low ash, low sulfur, low phosphorus, high CaO, high calorific value and high combustion rate of a high calcium bituminous coal, the experiment on injecting the bituminous coal into blast furnace is conducted, the influence of flux injection mode change on the performance of iron-containing burden is studied, and the burden structure under the condition of high proportion injection of the bituminous coal is explored, which lays the foundation for the large-scale application of blast furnace injection of the bituminous coal. The results show that, after using this bituminous coal, except for a slight increase in the melting start temperature and softening interval, other indexes are reduced. Keeping the bituminous coal ratio unchanged at 30%, with the coal ratio increasing from 140 kg/t to 200 kg/t, the softening start temperature, softening end temperature and melting end temperature of the burden gradually increase, while the melting start temperature, softening interval and maximum pressure difference have little changes, and the thickness of melting interval and soft melting layer first increases and then decreases. When the coal ratio is kept constant at 160 kg/t, with the proportion of bituminous coal rising from 30% to 100%, the softening start temperature, softening end temperature, melting start temperature and melting end temperature of the burden as a whole show a trend of increasing first and then decreasing, the softening interval shows a trend of decreasing first and then increasing, and the melting interval, maximum pressure difference and soft melting layer thickness also show a trend of increasing first and then decreasing.