Abstract: The numerical simulation method was employed to investigate the fluid flow and the effect of bottom-blowing location on the circulation flow rate in RH with side-bottom blowing. The numerical results indicated that for RH with bottom blowing, when the included angle is constant between the two lines connecting the bottom-blowing location with ladle center and connecting two snorkels, the circulation flow rate increases firstly and then decreases with the increasing distance between the bottom-blowing location and ladle center. When the distance between the bottom-blowing location and ladle center is constant, the circulation flow rate decreases with the increasing included angle. When the bottom-blowing gas flow rate is equal to 200 L/min, the circulation flow rate in RH with side-bottom blowing is up more than 25 percent. When the side-blowing gas flow rate is equal to zero, the circulation flow rate is 60%~100% greater than that in traditional RH.