Abstract: Keerom regency has a high maternal mortality rate and still increased steadily. Consequently, Regency Health Services in Keerom proposed a program so called Cohort problem based Ante Natal Care. This program was conducted by thoroughly followed all pregnant women from the beginning until they delivered babies to find any problems regarding their pregnancies. Some interventions were done to solve the problems to prevent mortality. This study aimed to describe the potential obstetrical dangerous and obstetrical dangerous pregnant women in 3 Health Centers.