The conflict between work and family roles in dual-career families has always been an important research topic in the field of sociology. This paper discusses the root causes, influencing factors and solutions of this problem from the perspective of sociology. It is found that social expectations and traditional gender role concepts play a key role in dual-employee families, which leads to the conflict between work and family roles. Society usually expects men to bear the economic responsibility, while women mainly bear the responsibility of family care, which often leads to the career development challenges of family members in dual-employee families. The division of labor planning within the family also has a significant impact on the conflict between work and family roles, which requires coordination and balance to ensure that housework and care responsibilities are reasonably shared. External support measures, such as nurseries, domestic nannies and domestic helpers, can reduce the burden of conflict between work and family roles. In addition, social policies, such as paid maternity leave, flexible working arrangements and nursery subsidies, can also alleviate this conflict to some extent. This study is helpful to better understand the conflict between work and family roles in dual-career families, and provides a useful reference for making more effective policies and family internal planning. The research in this field is still developing to cope with the changing social and family dynamics.