High uterine artery resistance at 7 weeks’ gestation with no previous history of miscarriage can be observed. If there is a previous history of embryonic arrest, you can take aspirin or low molecular heparin and closely monitor liver function and platelets during this period. High resistance to uterine arterial blood flow indicates that the uterine blood flow is not too good, there is no previous history of miscarriage, by drinking more water, some people will naturally come down, you can review after a week, review is still high, need to be treated with drugs. Pregnant women with a history of embryonic arrest need to take oral aspirin or low molecular heparin, which are antiplatelet aggregation drugs or anticoagulant drugs, and must be taken in accordance with medical advice. Those with coagulation disorders, or bleeding tendency, should be prohibited from taking. Nosebleeds and hematuria may be caused by drug overdose during use, and immediate medical attention is required, and platelets and bleeding and clotting times should be checked during the use of the drug.