This research presents the parenting styles adopted by multi-ethnic parents of Asahan and Batak Toba ethnic groups. The culture brought by parents will affect parenting styles and will have an impact on aspects of child development, including the child's social emotional. This study aims to determine the types of parenting carried out by multi-ethnic parents, and to determine the factors that affect the social emotional development of children with multiethnic care. . The research method used in this research is descriptive qualitative with a psychological approach. Data analysis techniques include reducing data, presenting, drawing conclusions and verifying data. The results showed that the multi-ethnic parenting style in the city of Tanjung Balai based on seven parents resulted in different parenting styles, this was due to different educational and economic backgrounds. There was no problem with the multi-ethnic parenting style, some parents adopted a parenting style in accordance with the character of the two tribes, resulting in a new parenting style. The parenting styles produced by multi-ethnic parents can be grouped into two, namely permissive and authoritative parenting styles, where the permissive parenting style is applied by 3 parents, while the authoritative parenting style is applied by 4 parents. Regarding the effect of parenting style on the social emotional development of children, the permissive parenting style applied by parents with two different cultures tends to create children who are socially free and emotionally spoiled. Meanwhile, authoritative parenting applied by multi-ethnic parents tends to make children socially controlled, and emotionally proportional.