The health and intelligence of the child begins with the health and good life of the mother. Modern medicine proves that 2/3 of a person’s intelligence level is determined before birth; human hearing, visual and tactile abilities are also determined by the degree of development during the fetal period; the mental state, emotions, behavior and thinking of the pregnant woman all play a role in influencing the character of the fetus. So how can we have a healthy and smart baby? What are the important things to pay attention to during the rapid physical and mental changes throughout pregnancy? I believe you are eager to get answers to all of them. When a couple hears that they are about to become parents, their first reaction may be excitement, but don’t let the happy news go to your head; how to make the fetus pass the first 3 months of life safely is a serious test for the survival and health of the fetus itself. Generally speaking, pregnancy is divided into three stages: early pregnancy (January to March), middle pregnancy (April to June) and late pregnancy (July to October). The early stage of pregnancy is a critical period for the development of fetal organs and is particularly sensitive to the influence from various aspects. Therefore, early pregnancy health care is crucial. The first month of pregnancy refers to the period within four weeks from the first day of the last menstrual period. The first month is the period when the neural tube, limbs and eyes begin to differentiate. Once harmful substances are encountered, the cells of these tissues and organs will stop developing and become mutilated, resulting in malformations. During this period, care should be taken to avoid contact with patients suffering from influenza, rubella, infectious hepatitis, etc. Try not to use drugs, as both viruses and drugs may affect the development of the embryo. In the first month of pregnancy most pregnant women do not have any reaction. In the second month of pregnancy the germ develops into an embryo. This month is the period of differentiation and formation of most of the organs of the fetus, so it is also called the embryonic organ-formation period. This is the period when miscarriage is most likely to occur. As the embryo enters the organ differentiation stage, susceptibility is at its greatest and avoidance of viruses, toxic chemicals, and radiation is still crucial. Mothers-to-be should increase their sleep time by one hour a day, pay attention to rest and ensure sufficient oxygen supply. In terms of diet, you should choose light, tasty and easy-to-digest foods. Pregnancy reactions this month are generally manifested as nausea, loss of appetite, vomiting, dizziness and weakness, and inability to smell fumes or odors. These reactions will disappear naturally after the third month of pregnancy. The third month of pregnancy enters the fetal stage. The fingers and toes are clearly visible, the placenta begins to form, and the umbilical cord grows gradually, when the fetal sexual organs are formed. The enlarged uterus presses on the base of the bladder causing frequent urination. This month is still the most teratogenic period for the fetus. Pregnant mothers-to-be should be careful against various viruses and chemical poisons. Be careful with medication, no penetration, no smoking and alcohol, stay away from toxic and harmful chemicals, control bad habits and avoid other harmful factors. Ultrasound examination is a method of disease examination by using ultrasound waves emitted to the body and receiving its echo signal to display images on the screen, which is non-invasive to the human body and has been widely used in obstetrics and gynecology. Ultrasound is generally not needed in early pregnancy, but should be done when there is vaginal bleeding, lower abdominal pain and obvious fetal malformations. Electromagnetic radiation has a greater impact on women and children, especially on pregnant women, such as the appearance of neonatal malformations and increased leukemia. The latest study reported that women in early pregnancy, using computers for more than 20 hours a week, their miscarriage rate increased by 80%, and also increased the birth rate of malformed fetuses. Therefore, stay away from cell phones and computers as much as possible during early pregnancy. Avoid X-rays. When an X-ray examination is necessary, the uterus should be covered to ensure the safety of the X-ray examination. Usually the radiation exposure is well below 0.05Gy and does not cause structural changes in the embryo or fetal developmental defects.