The paper wanted to discover the structure and spirit of "joke fable" in Ming and Ching dynasty. Did it succeed from former dynasty or created by themselves. What did author want to express? What were the intents of joke fables. Had any differences between processes of coding and decoding about joke? The first part of the paper displayed the method of "serious with humor" in Ming and Ching dynasty. The method which succeed form traditional Chinese satire spirit, but the types had been transformed from serious topics to easy jokes. The second part of the paper discovered the motivation and operating strategy of jokes of author. Books of jokes sometimes edited by particular author. They selected widespread jokes and added ideas or used the proper words. We may call joke book a collective workings. But in the process of generational widespread, original author became anonymous usually. Different authors showed different perspective of joke creating. The third part of the paper concluded that joke fables of Ming and Ching succeed Chinese humor tradition. They adopted humor or interesting technique to express the sense of humor and expected the purpose of "benefit of managing disorder".