本文以白蛇傳故事重要定本──馮夢龍〈白娘子永鎮雷峰塔〉與方成培《雷峰塔傳奇》為研究範圍，運用「精怪傳說文體」的「藝術功能的敘事結構」思維分析蛇性承繼之情節特點。此外，兩文本因創作者更動情節次序，造成相異的情節意義，進而影響白蛇的形象。再者，精怪故事的「傳說敘事型態」用以揭示異類身分的因果結構。方成培《雷峰塔傳奇》〈端陽〉一折，處於情節重要發展位置。因其為「甲型」的「由果求因」的敘事手法，以「雄黃酒變」情節，證明白娘子現形蛇虺的必然，不止結合民間端陽節俗的觀念，亦代表精怪故事中的文化心理結構──「類的不同」。文末，探討兩定本在精怪故事承繼的架構下，因明清對理、欲、情的拮抗，所形成的精怪文學的民族文化心理結構，對白蛇形象的影響意涵。

This paper was according to a range of research in Feng’s “the White Maiden Locked for Eternity under the Leifeng Pagoda” and Fang’s The Legend of Leifeng Pagoda definitive editions of the Legend of White Snake, using “the Narrative Structure of Artistic Function” in “the Weird Legendary Style” to analyze plot features in similar development contexts. In addition, the creators changed the plot sequence that had an effect on the different plot implications and an image of white snake between two definitive editions.Moreover, “the Legendary Narrative Style” in a weird story revealed an heterogeneous identity for the causal structure. The〈Duanyang〉sekime on Fang Chengpei’s The Legend of Leifeng Pagoda played a importment position in the development of plot, because it’s a “type A” narrative technique of “seek cause from effect” to prove necessarily on the white lady as presented as a snake in the plot of “realgar wine change” that not only combined folk Duanyang festival customs, but also meaned the cultural psychological structure about “the difference in class” in a weird story. Lastly, two definitive editions placed the similar development architecture in a weird story to explore an antagonism of concept li, desire, emotion in Ming and Qing, its formed the nation cultural psychological structure of Weird Literature to effect the meaning on the white lady.