High uterine artery resistance after pregnancy may be caused by bad lifestyle habits, gestational hypertension, gestational diabetes and other factors. 1. Bad life habits: If pregnant women still have bad life habits such as smoking, drinking and staying up late during pregnancy, they may have high uterine artery resistance. 2. Hypertension during pregnancy: it may cause spasm of small arteries throughout the body of the pregnant woman and dysfunction of endothelial cells, resulting in reduced blood perfusion, which causes elevated resistance of uterine arteries. 3. Gestational diabetes mellitus: If the blood sugar level in the pregnant woman’s body is high, arterial thrombosis may be formed, thus leading to high resistance of uterine arteries. During pregnancy, women should rest more, relax, avoid tension and anxiety, develop good habits and eat a light diet. If the resistance of uterine artery is high, you should go to the hospital in time, diagnose the cause of the disease and then actively treat it, so as to avoid delaying the disease.