Background: In any community, mothers and children constitute a priority group. In sheer numbers, they comprise approximately 71.14% of the population of the developing countries. In India, women of the childbearing age (15-44 years) constitute 22.2% and children under 15 years of age about 35.3% of the total population. Together, they constitute nearly 57.5% of the total population. Mothers and children not only constitute a large group, but they are also a ‘vulnerable’ or special-risk group. The main aim of MCH Services remains to ensure that, throughout pregnancy and puerperium, every mother maintain optimal health, and at the end of pregnancy, a healthy mother and a healthy baby and promote the child health throughout the infancy and childhood. Objectives; To study the utilization of health services by the pregnant and lactating mothers having infant in the rural field practice area Methodology: A community based cross sectional study was done among 400 pregnant and lactating mothers having infant residing in rural field practice area Nathnagar, department of Community Medicine of jlnmch Bhagalpur. from Feb 2020 To Feb 2021 for a duration of one year. A predesigned and pretested proforma was used to collect the sociodemographic details, utilization of Mother and child service. Conclusion: The better utilization of the maternal health services can be achieved by overall socio-economic development including focus on women empowerment and education, incorporation of religious norms and faiths in the health policies.