Abstract: Aiming at the problems of secondary oxidation of molten steel and large dissipation of stirring energy in the process of using double-hole bottom argon blowing mode in a steel plant, a 1 ∶ 4 water model of ladle in this plant was established. The effects of single and double permeable brick arrangement and bottom blowing gas flow rate on the mixing time of molten steel were simulated. Based on the optimal arrangement of bottom blowing permeable bricks, the influence of asymmetric double-hole bottom blowing flow rate on the mixing time under actual working conditions was studied. At the same time, high-quality vacuum pump oil was used to simulate ladle top slag, and the exposed area of molten steel under different gas flow rates was compared. The results show that in the double hole bottom blowing argon mode, when the bottom blowing position is 0.6 R, the blowing flow rate is 500 L/min, and the bottom blowing angle is 130°, the mixing time is small,and the mixing time is 59.8 s. In the single hole bottom blowing argon mode, when the bottom blowing position is 0.6 R and the blowing flow rate is 500 L/min, the mixing time is small, the mixing time is 70.15 s. Compared with the single and double hole argon blowing mode, under the same blowing flow rate, the double hole bottom blowing is better than the single hole bottom blowing. The refining effect of ladle mixing in the asymmetric flow argon blowing mode is obviously weaker than that in the equal argon blowing mode. Considering the secondary oxidation of molten steel, in the actual refining process, the maximum bottom blowing flow rate should be controlled at about 500 L/min.