Maternal and infant mortality has the third rank in East Java. The effort to reduce the number of maternal and infant mortality is through Mentoring Program Pregnancy and High Risk Infants Mortality or Gerakan Pendampingan Ibu Hamil Beresiko Tinggi (Gerdaristi). This study aimed to investigate the success rate of implementation of Gerdaristi program in reducing Maternal Mortality Rate (MMR) and Infant Mortality Rate (IMR) in Nganjuk.