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The purpose of this paper is to investigate the tendency toward fertility and its social and cultural factors. Fertility and tendency to it are a multifaceted variable that is studied in various sciences. In this research, sociological dimension has been addressed. The dependent variable is a tendency to fertility and independent variables are divided into two parts: social variables (women's education and employment) and cultural variables (gender preference and gender equality). The statistical population of married women aged 20-44 is Tehran. The sample size is 384. The research method is scrolling.In the theoretical framework, the modernization theory, the McDonald's gender equality and the cultural rationality, and cultural evolution and cultural environment   have been used. And data analysis is done using spss software. Spearman correlation and regression and path analysis were used. The results showed that there is a significant statistical relationship between social variables such as education and employment of women and cultural variables such as gender equality and gender preferences and fertility tendency, and in the results Regression showed that education was 15.3%, and female employment was 12.8 and gender preference was 11.5 of changes in fertility tendency.