Bleeding in the 8th week of pregnancy with blood clots resembling menstruation is considered to be caused by preeclampsia and ectopic pregnancy. 1. Pre-eclampsia: Pre-eclampsia is related to chromosomal abnormalities of the embryo and systemic diseases, genital abnormalities and endocrine abnormalities of the mother. Pregnant women mainly manifest vaginal bleeding, paroxysmal lower abdominal pain, lower back pain and so on. 2. Ectopic pregnancy: the disease refers to the fertilized egg in the uterine cavity outside the site of the bed development, common causes include tubal dysplasia, infection or tumor, and contraceptive failure. Typical symptoms of ectopic pregnancy are menopause, abdominal pain, vaginal bleeding, some pregnant women vaginal bleeding accompanied by metaphysical debris discharge, can also be manifested in the 8 weeks of pregnancy bleeding with blood clots like menstruation. It is recommended that those who are bleeding in the 8th week of pregnancy with blood clots resembling menstruation should immediately consult a regular hospital for examination in order to prevent accidents from occurring. During pregnancy, pay attention to rest, at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.