Background: Maternal service is the health service provided to mothers (women in their child bearing age). In Ethiopia mothers and children make up over 2/3rd of the whole population. Most pregnant women in developing world receive insufficient or no prenatal care and deliver without the help of appropriately trained health care provider. The situation in countries like Ethiopia is worsened by different factors such as poor infrastructure and lack of accessibility to health facilities. Taking this into account this study mainly focuses on the utilization of maternal service and associated factors among women living in selected villages in Nifas silk Lafto, Woreda 1. . Objective: This study assesses the utilization of maternity services and associated factors among women living in Nifas Silk lafto sub city, woredas 1. Method: A community based cross-sectional study design was used to assess the utilization of maternal service utilization and associated factors from January to March 2020. Mothers who gave birth in the past five years were included in the study. A pre tested Interview administered questionnaire was used for data collection; Data was coded and entered and analyzed using SPSS version 23. Result: The result showed that there is generally 38.6% maternal health service utilization practice. Availability of health facility ( OR:0.489, 95%CI(0.282,0.847),) and accessibility (OR:3.130, 95%CI (1.390,7.048) are found to have significant association with maternal health utilization practice. Conclusion: The finding revealed that the majority of the respondents have poor maternal health service utilization practice which might have an impact for the mother and the new born baby, it’s also indicated the majority of the respondents don’t have knowledge regarding danger signs of pregnancy and the risks associated with pregnancy and child birth, thus responsible authorities should establish a way to create awareness , and also government authorities should be involved in solving the problem of poor infrastructure and transportation.