Sociologists considered studying sports since 1960's. The area that has come to be called the sociology of sports encompasses issues such as violence in sports, economics and sports, politics and sports and the like. This article deals with socialization of sports, hence we concentrate on factors that facilitate the entry of the individual into the field and helps continuation of sports activities. The problem of the study is stated as: with respect to the role of socializing factors in stimulating persons towards sports, as being emphasized by sociologists of sports, and with regard to significant role played by the family in the process of socialization of the individual, sports activity can be considered as a behavioral pattern that takes shape under influence of the general process of socialization. Then our question is: What are the influences on sports activity as exerted by the socializing factors, especially those of the family?This study employs the survey method, and sampling is selected by the Cochran formula. The volume of the sample, 400 sportsmen, is determined by multi phase sampling technique, These sportsmen originate from sports clubs of the Ahwaz County. Having conducted the primary test data was collected using the questionnaire. The data was analyzed using the SPSS software. The results show that relationship between the degree of being a sports family, support given by the family, the perception of the family on sports, acceptance by family members, and sports socialization were Significant.