This study belongs to the pattern of descriptive and analytical studies, with a view analytical Quantitative and qualitative the reasons that led to the spread of early marriage for girls, As well analytical Quantitative and qualitative of relationship between early marriage for girls and their social characteristics. The study is based on the sample social survey method, represented in a simple random sample of underage married girls, who obtain social and health care services from women welfare associations. The study relied on collecting its data: on A questionnaire regarding the Contributions of women's welfare associations in reducing marriage for underage girls (Applicable to minor married girls).The most important results of the study confirmed the existence of a statistically significant correlation between marriage of underage girls and their social characteristics in terms of (income, education, and work).The study recommended: Supporting married girls by providing them with reproductive health services. Work to bridge the legal gaps that allow circumventing the law by early marriage through community dialogue.