「變形」（metamorphosis）指的是人類與異類相互變形的現象。觀察民間故事中，「人蛙聯姻」的故事類型古今中外流傳極多，分布區域亦廣，均以「人蛙變形」為故事發展的主要情節，各具特色。選取格林童話〈青蛙王子〉，民間故事中的「神蛙」系列，以及《聊齋志異》〈青蛙神〉為例，通過行動者及行動結構模式進行分析，主要在揭示神奇敘述所呈現的社會功用、文學內涵與象徵意義。
＂Metamorphosis＂ refers to the phenomenon of transformation between human and non-human. Folktale types of ＂Frog and Human Got Married＂ have been widely seen in various times and areas. The main plot of the stories is composed of ＂transformation between human and frog＂, each with its own characteristics. The study on Grimm's fairy tale ＂Frog Prince＂, the ＂Sacred Frog＂ series in folktales, and ＂Frog God＂ from ＂Liao Zhai Zhi Yiz＂, through the analysis of actors and action structural patterns, will unveil the social functions, literary connotations and symbolic meanings presented by the magical narratives.
