Abstract: BiXiaYuanjun on Mountain Tai has been one of the goddesses that influenced Chinese history most. The belief in Bixiayuanjun originated from the Song Dynasty, rose during the Yuan Dynasty and the Ming Dynasty, and reached high tide of folk beliefs in the mid-Ming Dynasty. Based on the historical data, this paper corrects the Tendency――partiality for the ancient on the studies on the belief in Bixiayuanjun. Key words: Mountain Tai, Yunv on Mountain Tai, Bixiayuanjun, folk belief