Postpartum haemorrhage is one of the leading causes of maternal death. Postpartum haemorrhage is defined as blood loss of more than 500 ml after vaginal delivery or 1000 ml after the fetus is born per-abdominal or after completion of stage III. The number of maternity mothers in RS Tiara was 1,122 deliveries and consisting of normal as many as 418 (37.3%) and deliveries complications as many as 704 (62.7%) which included: bleeding with ante-partum bleeding as many as 3 (0, 4%), postpartum haemorrhage as many as 38 (5.4%), delivery with preeclampsia as many as 217 (30.9%) and others deliveries as many as 446. This study aims to determine the factors that affect the occurrence of Bleeding on Postpartum at RS.Tiara Pematangsiantar City. This research is observational analytic with the design of research case control study. Case and control sampling was done by consecutive sampling. The total of case and control sample in this research were 64 respondents. Data were analyzed by chi square test with α 0,05 and multiple logistic regression test.The result of the research with multivariate analysis showed that there was influence between parity factor and antenatal care with the incidence of Postpartum Hemorrhage at RS Tiara, Pematangsiantar City. It is expected to the health workers will be more provocative in giving counseling to society about the importance of pregnancy test so the maternity mothers are more understanding the benefits of performing routine pregnancy test at least 4 times during pregnancy. It is also expected that the participation of husbands to be more willing to open up and receive counseling, especially about the pregnancy test so that the husband would accompany the mothers for pregnancy test.