The injection of uterine contraction blood stasis in the clinical mainly used for medication abortion and artificial abortion, usually three days of medication, most patients residual blood stasis can be discharged clean. The commonly used clinical contraction injection is hysteronin, the role is to promote uterine contraction, generally used for poor uterine contraction, a small amount of residue in the uterine cavity, etc., after the injection with the uterine contraction can be discharged from the uterine cavity with the stasis of the blood. It is usually used for three days in a row. If the blood is not discharged for more than three days, it is necessary to use other methods, because a longer period of time will increase the chance of infection. The use of drugs need to be combined with clinical symptoms, need to be under the guidance of a professional doctor, different diseases are treated differently. Each person has certain individual differences, the degree of sensitivity to the drug is different, the injection of hysteronin to discharge stasis will not be more than three days, you need to observe the effect of the drug at any time. After the injection of drugs, pay attention to the combination of work and rest, do not have too much pressure, bleeding more, abdominal pain worsened and other conditions promptly inform the doctor. Do not eat cold, spicy and stimulating food, do not drink alcohol during this period, avoid strenuous exercise. If necessary, you can also supplement the treatment with traditional Chinese medicine to promote uterine contraction. If it occurs in the postpartum period, it can be injected quietly or intramuscularly for 3 days to promote contraction, and encourage early activity and breastfeeding to promote contraction and discharge of blood.