Maternal health care service utilization is very low in developing countries especially in Ethiopiarn.Having this in mind, this study was made to assess factors influencing the utilization of maternalrnhealth care service in Duna Woreda, SNNPR Ethiopia. A primary data source was used as a datarninput and cross-sectional study was conducted from January 10 to March 20, 2014 in DunarnWoreda, SNNPR. A Total of 130 women birth in the three preceding the survey were selectedrnsystematically. Data were collected using questionnaires and FGD were used to collectrnquantitative and qualitative data, respectively. The study indicates that ANC of coverage thernstudy area was very low; about (46.1%). The main reasons non attending ANC servicernaccessibility and availability of health service. Institutional delivery coverage in the study arearnwas also very low; about 21.6% .majority of delivers took place at home; about 78.4%of deliversrntook place at home due to presences of relatives nearby, prefer TBA, lack of awareness, andrntransport problem were the main reason cited for resorting to home delivery. The chi-square testrnanalysis indicate that the risk of non-attendance of ANC service and home delivery was higherrnfor those women whose resident was rural, low educational status, women attitude, higher parity,rndistance, ,household income and access to media found to be significantly predictors. inrnconclusion, the study indicate that the low coverage of ANC and delivery care service in the study area due to demographic ,socio-economic and socio-cultural factors. Increasing of maternal health service coverage and promotion of education, information, women awareness for use of institutional delivery and ANC service in the rural and urban community are recommended