If the patient is pregnant within 49 days, it is determined that the pregnancy is intrauterine, the gestational sac is larger than 1.0 cm, and there is no contraindication to medical abortion, medical abortion can be chosen. The possible hazards of medication abortion are mainly the following 3 aspects: 1. Patients may have adverse reactions to the medication, such as gastrointestinal reactions like nausea, vomiting and diarrhea after taking the medication. Allergic reactions such as rashes may occur after taking the medication, and in severe cases, anaphylactic shock can occur. The patient must pay attention to the observation in the hospital when using the medicine, if there is a more serious allergic reaction, to timely treatment, if not timely treatment, may endanger the life of the patient. 2, in the process of drug abortion, there may be haemorrhage, failure of drug abortion, uterine cavity residue and other situations. Patients should be observed in the hospital for abortion. Heavy bleeding can be stopped by using contractions or clearing the uterus to stop bleeding. If the medical abortion fails or there is residue, the uterus can be cleaned for remedy.3. Medical abortion may cause damage to the endometrium of the patient, causing adhesions to the endometrium, resulting in risks such as low menstrual flow and secondary infertility after medical abortion.