Kinh is the largest population in Vietnam. It belongs to Mon-Khmer linguistically, but there is no last word for its origin. There are three hypotheses for the homeland of Kinh. The formation of Kinh population is also hypothesized to have occurred by one of two different modes. One is demic diffusion of Mon-Khmer, the other is Daic population assimilated by Mon-Khmer. Population studies such as dermatoglyphics can be used to determine the relevant mode. Fingerprints, palm prints, and sole prints of 135 individuals from Kinh populations all over Vietnam were collected in this project. Principle component analysis and dendrogram analysis were done based on the dermatoglyphic data of populations from south China and Vietnam. Kinh Vietnamese was found to be quite close to Deang and Blang, which belong to the Mon-Khmer group, but are not closely related to the Daic populations. This study supports the demic diffusion mode of the formation of the Kinh population. The interaction with the Daic population was never a significant course in the formation of Kinh.