Objective To explore the effect of bilateral perineum nerve block anesthesia combined with comprehensive nursing in reducing the rate of perineum side cutting of primipara. Methods 110 primiparas who delivered vaginally in our hospital from July 2019 to December 2019 were selected as the research objects. According to the random number table method, they were divided into two groups, 55 in each group. The control group was given the routine nursing mode and local infiltration anesthesia. The observation group was given the comprehensive nursing mode and bilateral perineum nerve block anesthesia on the basis of the control group. The perineum side cutting status, perineum laceration, duration of labor, VAS score, Apgar score, compliance and nursing effect of the two groups were compared. Results Compared with the control group, the incidence of perineum side cutting was lower in the observation group than that in the control group (P<0.05).The first and second stages of labor were shorter in the observation group than the control group (P<0.05); compared with the control group, the VAS score, compliance and satisfaction index were better in the observation group than the control group (P<0.05), but there was no significant difference in neonatal asphyxia and postpartum hemorrhage (P>0.05). Conclusion Bilateral perineum nerve block anesthesia combined with comprehensive nursing may effectively reduce the incidence of perineum lateral incision of primipara, reduce the pain during delivery, shorten the labor process, improve the compliance and satisfaction of parturients, and has a high clinical value.