养生是中国传统文化中的一个古老术语，它既是中国人延长生命的手段，也是中国人的生命观念。本文聚焦于乐山城市新移民群体的饮食养生实践，在都市民俗学和生活世界的研究框架之下，对该群体的饮食养生进行“深描”，从采买、制作、食用等日常饮食生活的脉络中，理解城市新移民养生实践中的生活经验与生存智慧。面对都市现代化过程中的各种健康问题，城市移民将饮食养生作为一种抵抗生命无常与失常的手段，把记忆、情感与经验融入食物之中，并建构起自我的饮食养生体系。现代营养科学与传统中医理论、乡土经验与都市经验在这一开放、流动的体系中相互交融，养生也被注入了实践者新的理解与期待，并交织着他们对疾病、身体与生命的思索。

Health-preserving is an ancient term in traditional Chinese culture, and it is both a means to prolong life and a concept of life for Chinese. This paper focuses on the dietary regimen practices of the urban migrant group in Leshan City and provides a deep description of their dietary regimen under the research framework of urban folklore and daily life. From the vein of daily dietary life, such as purchasing, cooking, and eating, we can understand the life experience and survival wisdom of urban migrants' health-preserving practices. Faced with various health problems in the process of urban modernization, urban migrants use dietary regimen to resist the vagaries and disorders of life, integrate memories, emotions and experiences into food, and construct their own dietary regimen system. Modern nutritional science and traditional Chinese medical theory, local experience and urban experience intermingle in this open, fluid system. Health-preserving is also infused with practitioners' new understanding and expectations, and intertwined with their thoughts on illness, body, and life.