Decrease in estradiol in early pregnancy is mainly caused by abnormal ovarian function, poor diet and living habits, etc. It can be improved and treated by diet, living habits and medication. 1. Diet: If there are no obvious symptoms and the drop is not very obvious, you can consume beans and soy products and supplement soy isoflavones to improve the phenomenon of low estradiol. 2. Lifestyle habits: If the problem is caused by bad lifestyle habits, you should keep regular work and rest, avoid staying up late, quit smoking and drinking, and take proper exercise to enhance your physical fitness. 3. Drugs: If caused by abnormal ovarian function, the decrease of estradiol is more serious, and it is difficult to be relieved by improving diet and life habits, you can take estradiol valerate tablets, caprylyl estradiol tablets and other drugs to supplement estradiol, but must follow the doctor’s instructions to use the drugs. If estradiol decreases significantly in clinical practice, patients should go to regular hospitals in time to find out the cause of estradiol decrease and treat it under the guidance of doctors.