The invention relates to an independent steel ladle rotary table accident slewing mechanism and method, and belongs to the technical field of metallurgy industry continuous casting equipment. According to the technical scheme, a hydraulic cylinder (13), a driving semi-clutch (4), a driven semi-clutch (5) and a small gear (6) are sequentially arranged on a stepped shaft (9) of a hydraulic motor (1)from bottom to top, a driving semi-clutch bearing (10) is arranged at the lower end of the driving semi-clutch (4), the upper end of the driving semi-clutch (4) and the lower end of the driven semi-clutch (5) are provided with meshed teeth respectively, the small gear (6) and the driven semi-clutch (5) are fixed together with the stepped shaft (9) through a small gear upper bearing (7) and a small gear lower bearing (8), and outer teeth of the small gear (6) and outer teeth of a steel ladle slewing bearing (16) are meshed together. The mechanism has the beneficial effects that when a steel ladle rotary table breaks down, the steel ladle rotary table can be smoothly rotated to the designated position, and the steel ladle rotary table driving reliability is improved.