西王母是中国最古老的神话母题之一，历经先秦典籍、道教信仰、戏曲影视的层层改写，原始形象渐被世俗化的“王母娘娘”所遮蔽。网络小说《盗墓笔记·蛇沼鬼城》跳出后世固化形象，溯源《山海经》《穆天子传》等原始文献，从部族设定、图腾符号、历史叙事三个维度完成了对西王母神话的当代重构，并通过数字平台实现广泛传播与二次创作。本文以民间文学视野，立足西王母神话母题的流变史，综合运用文本细读、神话学理论与数字田野调查，系统分析《蛇沼鬼城》的重构机制、理论逻辑、传播生态与受众接受，论证其作为传统神话“创造性转化与创新性发展”典型案例的价值，为中华民间文学的活态传承提供参照。

The Queen Mother of the West is one of the oldest mythological motifs in China. Through the successive rewriting of pre-Qin classics, Taoist beliefs, traditional operas and films, her original image has been gradually obscured by the secularized image of "Empress Wangmu". Breaking away from the stereotyped images of later generations, the online novel The Lost Tomb: The City of Snakes traces back to primitive sources such as The Classic of Mountains and Seas and The Biography of King Mu, and completes a contemporary reconstruction of the myth of the Queen Mother of the West from three dimensions: tribe setting, totem symbols and historical narrative, which has been widely disseminated and re-created through digital platforms.From the perspective of folk literature, and based on the history of the motif evolution of the myth, this paper systematically analyzes the reconstruction mechanism, theoretical logic, communication ecology and audience reception of the novel by means of close reading, mythological theory and digital fieldwork, demonstrating its value as a typical case of the "creative transformation and innovative development" of traditional myths, so as to provide a reference for the living inheritance of Chinese folk literature.