Abstract: Objective: To investigate the effects of Doula pain-abating machine on the analgesia in vaginal delivery.Methods: Two hundred and forty full term pregnant women scheduled by vaginal delivery were randomly divided into the Doula pain-abating machine group and control group(120 cases each group).The Doula pain-abating machine group and control group were treated with GT-4A machine and conventional doula care during vaginal delivery,respectively.The pain-abating effects,labor time of the first stage,second stage and third stage,rates of vaginal delivery and cesarean section and bleeding after 2 hours of birth between two groups were compared.Results: The analgesia effects in Doula pain-abating machine group were significantly better than that in control group(P<0.01).The labor time of the first stage and second stage in Doula pain-abating machine group were significantly shorter than those in control group(P<0.01).The rate of cesarean section in Doula pain-abating machine group(7,5%) were less than that in control group(16.7%)(P<0.01).The differences of the bleeding amount after 2 hours of birth and labor time of the third stage between two groups were not statistically significant(P>0.05).Conclusions: The application of Doula pain-abating machine in labor analgesia can play good analgesia effects,relieve the pain of patients,accelerate the delivery process and decrease the rate of cesarean section,which is worthy of promotion in clinic.