The embryo is sensitive to the stimulation of harmful factors in early pregnancy and is susceptible to abnormal embryonic development caused by the influence of harmful factors, resulting in abnormal pregnancy outcome. The main care for pregnant women should be strengthened, including: 1. dietary care, the diet should be diversified and light, easy to digest, to provide the various nutrients needed for the growth and development of the fetus, avoid the intake of high salt, high fat, high sugar, too cold and spicy, stimulating food. 2. life care, rest at night on time, do not stay up late, ensure sufficient sleep, moderate physical activity, pay attention to the combination of work and rest. The first thing you should do is to stay away from the bad environment of smoking and drinking alcohol, don’t drink strong tea and coffee.3. Psychological care, correct understanding of the process of pregnancy, relax and don’t be too nervous, avoid excessive stress, avoid long-term depression, excessive thinking, irritability, irritability and other bad emotions.