The invention discloses a riding comfort analysis method for a hub electrically-driven automobile and application in motor model selection. A fixed point of an amplitude-versus-frequency curve of a vehicle body acceleration speed relative to a road surface input speed is deduced by building a vehicle body and wheel two degrees-of-freedom quarter vehicle vibration system model of the hub electrically-driven automobile, and the riding comfort of the hub electrically-driven automobile is pointed out by modeling, simulation and analysis. Meanwhile, the invention discloses application of the riding comfort analysis method for the hub electrically-driven automobile in motor model selection. Through analysis, unsprung mass increase caused by a motor is the reason why the riding comfort of the hub electrically-driven automobile is impaired, the requirement of hub driving motor model selection on motor quality is given out by a fixed point frequency expression, and the riding comfort in a high-frequency band is improved.