辽代自建国伊始虽然就已接受了汉族的立嫡长子为皇太子制度，但由干世选制度的传统在契丹族中很深蒂固，致使皇太子为皇储的制度形同虚设。终辽一代，真正以皇太子的身份继帝位者只有辽兴宗一人而已，而以天下兵马大元帅继帝位者则有太宗、道宗、天祥帝三人之多。由此看来，在 Although the Liao Dynasty since the founding of the PRC accepted the eldest son of the Han nationality as the Crown Prince, the tradition of the system of selecting for the ghost through death has been deeply rooted in the Khitan ethnic group, leaving the Crown Prince as the royal crown. The end of the generation of Liao Dynasty, the real crown prince as the throne only Liaoxingzong one person only, and the general Marshal following the throne who have Taizong, Tao, Tiang Cheung emperor as many. In this sense,