1. Diet: Pregnant women should pay attention to balanced nutrition, eat more fruits and vegetables, coarse grains, lean meat and fish, and eat less greasy, spicy and irritating foods. In addition, pregnant women should drink plenty of water to keep their bodies hydrated.

2. Exercise: Proper exercise can help pregnant women keep healthy and enhance their physical fitness. But pregnant women should avoid strenuous exercise and high-risk exercise.

3. Sleep: Pregnant women should ensure adequate sleep time and sleep at least 7-8 hours a day.

4. Psychological aspects: Pregnant women should maintain a good attitude and avoid excessive tension and anxiety.