Finite element analysis was systematically conducted to investigate the plastic deformation behavior of 6mm-thick AZ31 magnesium alloy sheets processed by asynchronous rolling. This advanced rolling technology has significant advantages over traditional rolling methods and the co-directional dynamic rolling method. Particularly, it performs exceptionally well in reducing the rolling force. In this study, the influence of various depositional parameters on three key performance indicators of rolling mill, equivalent stress and strain distribution was comprehensively reviewed. Thanks to parametric optimization, the research has identified that the increase in the allometric ratio and the amount of dislocation leads to a corresponding decrease in the rolling force. The optimal rolling parameters were determined to be an allometric ratio of 1.3 combined with a dislocation amount of 28 mm. Under these conditions, the rolling process achieves superior performance characteristics, exhibiting ideal rolling force levels, favorable stress distribution patterns, and optimal strain uniformity, all of which contribute to enhanced rolling efficiency and product quality.