牛魔王是《西遊記》出場妖魔中最為特殊的，因他不足出現一次 ，有著連績性，並在其中營造出一個家族樣貌。本文試著揭露牛魔王、紅孩兒等一家人如此受到青睞，其實是為了與孫悟空如同孩童馴化成長的歷程加以比較，成為孫悟空成長的對照組。因此，第一部分討論重點在於：牛魔王性格的自在展現與孫悟空受到後天教育壓制的，實是結拜兄弟二人在五百年後產生歧異的關鍵。其次，紅孩妔的出現則使得孫悟空一方面佛見到自已的前身，得以警惕；一方面又要鼓勵孫悟空定住靈山的意志。而《後西遊記》是《西遊記》的續書之一，中的黑孩兒是模仿紅孩兒而塑造的。因此成為孩童馴化的觀察寸南，亦成為續對原作回應的一個切入角度。故而第三部分著力於揭示黑孩兒的形象能把握住了《西遊記》中孩童人格的概念，但無法展現出孩童成長的動態過程。

Niou-Mo-Wang (牛魔王) is the most particular demon is “the Journey to the West”(西遊記) because he doesn’t only appears once but also has a family. This paper tries to expose why Niou-Mo-Wang’s family is so special. It’s because the authors want to compare the process of growing up between Niou-Mo-Wang’s family and Sun-Wu-Kong (孫悟空), and they will be the case-contrast. Niou-Mo-Wang is allowed unrestrained freedom, but Su-Wu-Kong is suppressed by the rules and educators. Besides, Su-Wu-Kong is vigilant and encouraged to have a firm purpose by seeing Red Child’s (紅孩兒)behavior and end. Back Child (黑孩兒) in “the Sequel to the Journey to the West”(後西遊記) is the imitation to Red Child, so he can also be the object of study. However, through observing the role Black Child, the author can catch the ideas about children in “the Journey to the West”, but he can’t reveal the development.