Abstract: Objective:To observe the effects of the delivery ball exercise in later pregnancy on the labor and pregnancy outcome.Methods:One hundred and twenty-two later pregnancy women were randomly divided into the observation group and control group(61 cases each group).The control group was timely antepartum examined and guided about delievery,and the observation group was trained using the delivery ball.The pain degree,delivery way,labor time,and incidence rates of postpartum hemorrhage and neonatal asphyxia between two groups were compared.Results:The pain relief degree in observation group was significantly lower than that in control group(P<0.01).The vaginal delievery rate in observation group was significantly higher than that in control group(P<0.05).The use rates of the pethidine,diazepam and oxytocin at intrapartum in observation group were lower than those in control group(P <0.05 to P <0.01).The first and second labor times in observation group were significantly shorter than those in control group(P<0.01).The incidence rates of postpartum hemorrhage and neonatal asphyxia in observation group were lower than those in control group(P<0.05).Conclusions:The delivery ball exercise can relieve pain,shorten the labor,promote natural childbirth and reduce the incidence rates of postpartum hemorrhage and neonatal asphyxia.