The purpose of the article is to present a study of the concept of "gender socialization" as a socio-pedagogical problem. According to the purpose of the article, we analyzed the notion of "socialization" and its phenomena. The leading agent of socialization is recognized as a family and an important part of socialization is "gender socialization." The article represents the main characteristics of the concepts of "sex" and "gender", the author's definition of the concept of "gender" and the difference between the concept of "gender" and "role-gender socialization". It was also studied the relationships between the concepts of «gender socialization», «gender training» and «gender education». Summing up the position expressed by, we proposed a formula to describe the process of gender socialization