Childbirth is a process of releasing the results of conception, or referred to as a fetus or baby in the womb. A complication in the postpartum period is perineal rupture. This tear occurs at the birth of the head or shoulder, and there are several other influencing factors, including parity, birth weight, and the mother's age. This study used an analytic survey method with a cross-sectional approach. The population in this study was all mothers who gave birth in normal childbirth, which was recorded in the report register book and midwife information there were 90 normal birth mothers. The sample used was a total of 90 birth weighting mothers. The research was carried out at PMB in the Ogan Komering Ulu Regency area. The analysis presented is Univariate and bivariate. The results showed that there was a significant relationship between age, parity, and birth weight and the incidence of perineal rupture with each p-value of 0.000, 0.007, and 0.004. It is expected that there is a need for education, preparation and monitoring by health workers for mothers who experience complications in their pregnancies, especially those ages <20 and ≥35 years and with primiparous and grand multiparous parity in their pregnancies so that they can be avoided early and conservative treatment is carried out so that the incidence of perineal rupture can be prevented.