Pakistan is at an early stage of demographic transition and experiences rapid rate of population growth. Many strategie.s have been adopted to slow the pace of population growth but limited success has been achieved so far. The differentials of f.ertility levels demand careful assessment. The.present study is based on Pakistan Demographic Health Survey (PDHS, 1990-91). The bivariate and multivariate statistical techniques are used to understand the relationahip between fertility and social and demographic factors. The regression analysis demonstrates that ba:c~,ground varlables such as type of re.sidence, duration of marriage, education of respondents and nU'!'t>e'r of dead children exert an important influence on reproductive behaviour. It is recommended that social aspects of women life in terms of education, mother-child health facilities should be improved and a conducive environment should be provided to them so that they can freely participate in development process.