After oxytocin, patients do not need to worry too much about the time it takes to open the uterus differently from others, as long as there are no other uncomfortable symptoms, the delivery can generally go smoothly. Because the effect of oxytocin on opening the uterus varies from person to person, the length of time varies, and is related to individual physical condition, the progress of the second stage of labor, the number of deliveries, etc. 1. Individual physical condition: everyone’s tolerance to oxytocin is different, some pregnant women with sensitive physical condition may have their uterus completely opened after 2-3 hours of using oxytocin, while some pregnant women who are not sensitive may have their uterus not opened; 2. Progress of the second stage of labor : after the mother has regular contractions, the effect of the drug is better and the opening of the uterus will be faster; 3, the number of deliveries: generally the more the number of deliveries, the faster the opening of the uterus, the more obvious the effect of oxytocin use. For example, for the first-time mothers who are sensitive to oxytocin, it may take 11-12 hours for the uterus to open fully, while it may only take 6-8 hours for menstruating mothers. Since some pregnant women may experience nausea, vomiting and diarrhea after oxytocin use, strict compliance with medical advice is recommended to avoid adverse consequences. After using oxytocin, patients should pay attention to observe the symptoms of uterine opening and it is recommended to get out of bed and walk around appropriately when their conditions allow. In addition, it is necessary to maintain emotional stability and avoid bad emotions such as anxiety and fear, which may affect the delivery.