Objective To analyze the application value of unprotected perineum delivery technique on the delivery of low risk primiparas. Methods A total of 102 low risk primiparas in our hospital were taken as the clinical objects, and they were randomly divided into conventional group (51 cases) and study group (51 cases). The conventional group was given conventional delivery technique, and the study group was given unprotected perineum delivery technique. The perineal laceration degree, postpartum blood loss, neonatal asphyxia rates and pain degree of birth process in the two groups were compared. Results Two hours after delivery, the blood loss in the study group was less than that in the conventional group[(161.29±93.49)ml vs.(179.48±92.43)ml)] , the difference was statistically significant(P<0.05). The mild pain rates of birth process in the study group were higher than that in conventional group (76.47% vs. 47.06%), and moderate the pain rate in study group was lower than that in conventional group, and their difference was statistically significant(P<0.05). In the study group, the perineal laceration rate of grade I was higher than that in the conventional group, and the perineal laceration rate of grade II was lower than that in the conventional group(23.53% vs. 50.98%, and the differences were statistically significant(P<0.05). The neonatal asphyxia rate in the study group was obviously lower than that in the conventional group (1.96% vs. 13.73%), and the difference was statistically significant(P<0.05). Conclusion In the delivery process of low risk primiparas, unprotected perineum delivery technique can not only reduce the neonatal asphyxia rate, but also control the amount of postpartum blood loss. Thus, it is worthy of application in clinic.