There are many precautions and contraindications for pregnant women during pregnancy, including diet and life and other aspects. First of all, at the beginning of pregnancy, pregnant women need to take folic acid every day for three months. In addition, during the entire period of pregnancy, pregnant women need to have enough sleep, moderate exercise, but not excessive fatigue. Pregnant women should try to stay away from places with radiation, especially in the first trimester. Avoid excessive use of cosmetics and exposure to toxic gases and chemicals. Change bad life habits such as smoking and alcoholism. Pay attention to reasonable diet and balanced nutrition to prevent over- or under-nutrition. Be sure to go to the hospital for regular checkups. Pregnant women should keep their moods happy and control their emotions, and should not be too nervous or anxious. If a pregnant woman coughs or has a fever during pregnancy, please go to the hospital in time and use reasonable medication under the guidance of the doctor, and do not use medication arbitrarily.