Based on the pneumatic model of air spring and the dynamics MBS model of EMUs, the dynamics behaviors of EMUs in the2-point configuration and 4-point configuration were studied contrastively. What’s more, two improved suspension morphologies wereanalyzed, including the 4-point configuration with anti-rolling bar and the front 3-point configuration with the controlled differential pressurevalve. The results of the research indicated that: the EMUs with 2-point and 4-point configurations possed the similar dynamics behaviors;the 4-point configuration with anti-rolling bar could ensure the running safety of EMUs in the fault cases; the front 3-point configuration withthe controlled differential pressure valve could improve the EMU’s ability of passing curve in certain extent.