西游记是明代吴承恩所攥写的。西游记的主角是孙悟空。孙悟空出生时，具有超自然力量，但是一直很叛逆。因为孙悟空对天堂犯了大错，所以他受到惩罚，他必须帮助玄奘去印度取经回中国。整个旅程中，孙悟空和朝圣者经历八十一场灾难，也让孙悟空变成了一个更好的人。这篇论文应用西格蒙德·弗洛伊德的性心理發展分析为什么孙悟空在朝圣中，行为和性格变的更好。孙悟空在生命的早期阶段发展了固着，通过一直吃达到自我享乐。之后，孙悟空找到了他的阳具，如意金箍棒，孙悟空一直用如意金箍棒试图征服。孙悟空也开始仿效他的父亲形象，玉皇大帝。因为孙悟空违反玉皇大帝的法律，玉皇大帝试图处决孙悟空，但是失败了。所以，孙悟空认为强的人是高于法律的。然而只有佛陀能给孙悟空惩罚，把孙悟空放在五阶山下。孙悟空在五阶山下五百年以后，观音委任孙悟空保护玄奘去印度取经。孙悟空在玄奘身上找到了一位父亲形象，在观音身上找到了一位母亲形象。孙悟空模仿玄奘不使用他的阳具，如意金箍棒试图征服。反而，孙悟空用如意金箍棒做好事，不伤人。
The Journey to the West is written by Wu Cheng'en,1505-1580 A.D., during the Ming Dynasty, 1368–1644 A.D. The protagonist in The Journey to the West is named Sun Wukong. Sun Wukong is born with supernatural powers and is always up to no good. As punishment for his crimes against the Heaven, Sun Wukong must take a journey to India to help the monk Tripitaka, in order to retrieve Buddhist scriptures back to China. Throughout the journey Sun Wukong and the pilgrims will go through eightyone calamities. The pilgrimage transforms Sun Wukong into becoming a better man. This paper applies Sigmund Freud’s psychosexual development to Sun Wukong to understand his actions and personality and why it changes for the better during The Journey to the West. Sun Wukong develops a fixation to always pleasure himself through eating in the early stages of his life. Later Sun Wukong finds his phallus, the Golden Rod, to conquer, imitating his first father figure, the Jade Emperor. The Jade Emperor tries to execute Sun Wukong for disobeying his laws, but fails. Therefore, Sun Wukong believes that strong people are above the law. The only one that is strong enough to punish him is Buddha by putting Sun Wukong under the FivePhase Mountain. After five hundred years under the mountain, Sun Wukong is assigned by Guanyin to protect Tripitaka during the pilgrimage. Sun Wukong finds a father figure in Tripitaka and a mother figure in Guanyin. Sun Wukong imitates Tripitaka’s kind nature by not using his phallus, the Golden Rod, to conquer. Instead Sun Wukong uses the Golden Rod to do good merits and not hurt humans.