At this stage, the development of the fetus is generally more stable, and the fetal heart and germ can be seen very clearly by ultrasound, and the parietal-rump diameter can sometimes be measured. In addition, at this stage, the reaction to pregnancy vomiting is usually more serious. Therefore, the first precaution in this stage is to pay attention to rest, eat less greasy food and recommend a light diet. The second thing is to take folic acid, which can prevent neural tube malformation of the baby. In the early trimester of pregnancy, it is necessary to take folic acid to reduce the risk of fetal malformations. The third is to pay attention to the use of drugs, at this stage if pregnant women need to use drugs, must be under the guidance of a doctor, not blindly use their own drugs.