Objective To observe and analyze the clinical effects of mifepristone combined rivanol on metaphase pregnauey induced labor.Method 48 healthy metaphase pregnant women asking for induced labor were sampled at random.24 pregnant wowen

as the study group

were given mifepristone 150mg and then rivanol 100mg was injected to the amniotic cavity.Only rivanol 100mg were injected to the amniotic cavity in control group.The time from injected rivanol to uterine contraction

total time of labor

blood volume of postparturm

laceration of birth canal of the two groups were compared.Results The time from injected rivanol to uterine contraction of study groups and control group were（22.14±8.18）h

（33.36±8.25）h;total time of labor were（9.45±3.10）h

（15.65±3.25）h;blood volume of postparturm were（70.65±30.54）mL

（130.13±50.76）mL.The differences were significant（P<0.05 or P<0.01）.Conclusion Mifepristone was a safe and effective medicine

which can promote the cervical ripeness.And combined with rivanol

it is used in metaphase induced labor

which can short total time of labor and reduce complication.