The importance of preconception examination and auxiliary examination during pregnancy The new century is the era of high-tech information, with the standard of living and people’s demand for birth quality, preconception examination gradually attracts the high attention of pregnant women, young couples and society, in order to improve the quality of population, strengthen pregnancy health care, improve the quality of life of all people, reduce the rate of newborn defects, and create a harmonious living environment for each family, so strengthening pregnancy health care is the only Therefore, strengthening the health care during pregnancy is an important step to prevent birth defects before they happen. The object of preconception examination 1, has not done the marriage test 2, both or one of the couple has a history of genetic diseases, family history of genetic diseases, chronic diseases, infectious diseases; 3, the female party is ≥ 30 years old 4, has a history of bad births, such as habitual abortion, stillbirth, stillbirth, mental retardation children 5, has not been vaccinated against hepatitis B couples 6, the couple’s working life exposure to adverse factors, such as exposure to radioactive substances, chemical pesticides 7, have bad habits, such as long-term smoking, alcoholism, drug addiction, partial diet, etc. 8, people who keep pets medical history examination to carry on the good genes of the previous generation, to avoid the inheritance of bad genes) (1) age history (2) medical history (current medical history, past history, personal history, menstrual history, maternity history, family history, etc.) (3) physical examination (general condition, nutritional status, weight, height, whole body examination, etc.) (4) Specialized examination Routine examination is indispensable (chromosome is mainly for families with hereditary diseases) (1) Blood routine + blood type (2), urine routine (3) Stool routine (4), liver function (2.5 pairs) (5) Chest fluoroscopy/photograph (6), gynecological endocrine complete set (7) White belt routine (8), chromosome test Objective assessment for prevention (comprehensive assessment based on medical history, physical signs and auxiliary examinations) (1) Social assessment: determine whether there are risk factors affecting oneself and offspring based on sociological data, lifestyle, behavior, habits, domestic violence, etc. (2) Fertility history assessment: the presence of infertility, habitual abortion, multiple abortions, etc. should be evaluated for possible impact on pregnancy. (3) Family history assessment: the need for genetic counseling to assess the risk to the offspring. (4) Economic assessment: medical payment method and whether it affects the possibility of receiving health care medical treatment. (5) Nutritional assessment: assessment of nutritional status for wasting, overweight, obesity, etc., based on BMI and biochemical measurements or other measurements as necessary, such as metabolic measurements, body composition measurements, etc.; assessment of whether dietary habits are reasonable and scientific (6) Medical assessment: assessment of the impact on pregnancy, the impact of pregnancy on disease, and the impact of disease on the offspring, based on existing disease conditions, treatments, medications, etc. (7) Psychological assessment: the presence of psychological disorders, the impact of psychological state on pregnancy preparation, pregnancy and delivery, and psychological tolerance during delivery.