This research deals with the socio- economic factors that may affect fertility levels in Kingdom of Saudi Arabia Socio- economic factors were described applying multiple regression analysis study the potential relationship between selected socio- economic determinants of fertility in Saudi Arabia using SPSS This study indicate that there is no socio-economic factor that has a strong negative correlation coefficient with fertility variables education, health and housing, also it shows that the ditleremces in fertility splain beer education variables and the variables of housing in the variables of health