本文係以神話思惟理論、共同點理論，研究月亮神話。主要研究對象，包括人物吳剛，植物桂樹，動物玉兔、蟾蜍、天狗與建築月宮。 吳剛記載，見唐‧段成式《酉陽雜俎》，僅寥寥數字，語焉不詳。月中有桂樹說法，見晉‧虞喜《安天論》。玉兔之說，見《楚辭‧天問》，只有17 字記載。月中有蟾蜍之說，見《淮南子》。嫦娥變形成蟾蜍，見漢‧張衡《靈憲》。天狗食月，或蟾蜍食月，都和月蝕有關。至於月宮一詞，在六朝時，應該就已經出現，是棟虛擬建築。 用共同點理論，來研究桂樹（第參節）、玉兔（第肆節）、蟾蜍（第伍節）、天狗（第陸節），發現這些植物、動物和月亮之間，確實有些共同點，使這些植物、動物和月亮之間產生某種關係。用神話思惟理論，來研究吳剛（第貳節、月宮（第柒節），發現吳剛在月亮上，月亮上有月宮，和神話思惟有關，無法用正常邏輯去解釋。 本文廣泛搜集資料，分析歸納後，提出些自己看法。研究時，所用的神話思惟理論、共同點理論，是我在閱讀神話書籍時，體悟歸納出來的，是本文的貢獻。用這兩個理論，來研究月亮神話，尚能有點收穫。

This study explored moon mythology legends based on the theory of mythological thinking and sameness theory. The primary objects consisted of Wu Gang, a laurel, the Moon Rabbit, a toad, the Tengou, and the Moon Palace. The earliest documentation of Wu Gung could be traced as far back as YeouYang Za Zu by Duan Cheng-shi. However, it included only a few words without any details. The original version that there was a laurel on the moon was found in Ann Tian Lun by Yu Xi. The Moon Rabbit was recorded first in Tian Wen, Chu Ci, with only seventeen words. The legend about the toad on the moon was reported in Huai Nan Zi. In Ling Xian by Chang Heng, the transformation of Chang Er into a toad was recorded. The Tengou ate the moon or the toad ate the moon was related to lunar eclipse. As for the Moon Palace, it should have appeared in the Six Dynasties and was a fictitious building. On the basis of sameness theory, the author investigated the laurel (chapter 3), the Moon Rabbit (chapter 4), the toad (chapter 5), the Tengou (chapter 6), and found that the common features shared by the plants, the animals and the Moon gave rise to some relationships among them. By means of the theory of mythological thinking, the author explored Wu Gang (chapter 2) and the Moon Palace (chapter 7) and discovered that the myth that Wu Gang was on the Moon and the Moon Palace was on the Moon was pertinent to mythological thinking and inexplicable with normal logic. The author of the study had collected a wide range of materials, analyzed them, and presented his personal points of view. The contribution to the research was the creation of the theory of mythological thinking and sameness theory, which were induced by the author while studying relevant literature. It is hoped that the application of the two theories to moon mythology legends can make substantial contributions to the relevant research.