Abstract: The Southern Silk Road spans the Panxi Rift Valley-an ancient road spreading civilization and a cultural corridor for migration of nations. Here the unique geographical environment and climate resources breed rich products, which lays a solid material foundation for the diet, while the unique ethnic customs and long regional history lay a profound cultural foundation for the customs and dishes. Putting the research on the custom dishes of the Panxi Rift Valley under the background of the Southern Silk Road, this paper first, from the perspective of food culture exchange, elaborates on the impact of the cultural exchange of the Southern Silk Road on the custom dishes of the Panxi Rift Valley, such as the salt and iron culture, the caravan culture and the bronze culture. Secondly, it explores the composition of custom dishes of the Panxi Rift Valley from the perspective of regional food culture composition, health diet and the rift valley food culture resources, such as Zuoshan Ruoshui Yanbian dishes, Yi style dishes, Lipu style dishes, and dishes of Hui halal flavor and third-line construction immigrant flavor.

Key words: Southern Silk Road, Panxi Rift Valley, custom dish of the Panxi Rift Valley, health food of the Panxi Rift Valley, Panxi dish