When oxytocin is used as a drug to induce labor, pregnant women with hard cervix, long cervix, poor tolerance and low Bishop’s score will have poor response to contraction, which will not easily cause contraction. When the contraction is used to stop bleeding after delivery, if the contraction has been applied more, after the saturation of the contraction receptor, then the contraction will not respond and will not achieve the purpose of uterine contraction to stop bleeding, other drugs that promote uterine contraction can be applied, such as prostaglandin preparations, etc.