Up to now, a number of works of collection, study, introduction on folk stories of the Southern Khmer have been implemented with certain achievements. However, in order to recognize the uniqueness of the Southern Khmer’s fairy tales, we need to compare them with fairy tales of another ethnic group in large population and cultural differences (Viet). Therefore, the feasible study direction for the above objective is to compare Southern Khmer’s fairy tales with Viet peole’s fairy tales from the perspective of type and motif. Especially, finding the typical motifs of the type of the “Human in animal shapes” type of the Southern Khmer will contribute to identifying the specific characteristics of their cultural identity. This article presents the typical motifs of the “Human in animal shape” story type of the Southern  Khmer in the view of comparing with the Viet people’s similar story type, which is a practical work to meet the needs of preserving and developing the Khmer folk literature resource in general and this type in particular.