[Abstract] Objective to investigate the effect of delay time of induced abortion of pregnancy on maternal and neonatal outcomes. Methods: a retrospective analysis of our June 2008 -June 2012 year 41-41+6 weeks without any complications of childbirth pregnancy and complications of 172 cases of pregnant women for the experimental group, and based on the induction of experimental group time be divided into experimental 1 set of 90 cases (41 weeks gestation), experiment 2 sets of 80 cases (41+4 week)； taking over the natural parturient 92 cases of pregnancy for the Observer Group。 Respectively on experiment 1 and experiment 2 sets of pregnant women success rate of induced abortion, childbirth, postnatal, newborn asphyxia； a retrospective analysis of complications and experimental group and observer groups of delivery in pregnant women, postpartum complications, newborn asphyxia； Results induction of induction of labor induction success rate significantly 1 group lower than 2 group, cesarean section rates and ⅲ of meconium-stained amniotic fluid labour induction rate is significantly higher than the 2 groups, differences are statistically significant (P <0．05). Experimental group's Caesarean rate, significantly higher incidence of fetal amniotic fluid meconium ⅲ observer group differences are statistically significant (P <0．05); the experimental group and observer groups, experiment 1 and experiment 2 groups of postpartum haemorrhage, puerperal disease rates were, precipitate labor, birth injury, comparison of the incidence of fetal distress and neonatal asphyxia, differences were not statistically significant (P >0．05), Conclusions for delayed pregnancy with no complications in pregnancy complications and do not need to actively induced prematurely, for close fetal monitoring can be waiting for a natural birth, if you do not 41+4 weeks perinatal, possible cervical ripening and labor induction. [Keywords] delayed pregnancy; abortion; time of induced abortion; t