“Supplement to Journey to the West” was written by Dong Shuo at the end of Ming Dynasty, and there are 16 chapters in total. The book inserts and interweaves between Chapter 61 and Chapter 61 of “Journey to the West,” describing that the Mackerel Demon had a crush on the Monkey King, and tempted him to enter her abdomen; after experiencing “three worlds and six dreams,” the Monkey King was awakened by Master Hollowness, and not until then did he know that everything was illusion, and that it was caused by his going astray and forgetting his real nature; therefore, he went out of the Mackerel Demon’s belly and killed her, and then the Tang Monk and his disciples went on the journey to the West. The entire fiction goes through “three worlds and six dreams;” there are many miniatures of the real world in the dreams that change swiftly, that people can’t tell its being real or unreal, and that are very interesting. There is deep implied meaning in the book, and its art of writing has special features. Hence, the research mainly explored the implied meaning of “Supplement to Journey to the West” and its art of writing, and analyzed the book’s implied meaning of “seeing through the affection and realizing emptiness,” “satirizing the politics,” “satirizing the common intellectuals.” In its writing art, it has profuse rhetorical and writing techniques; as for the literary creation in content, there are diversified roles, and it is full of fantasy, imagination, super-reality, and vivid, comical and humorous artistic effects.