Some friends did not plan to get pregnant, but did not do a good job of “safety measures”, only to find out after the accidental pregnancy, recently “cold medication”, “fell, just took an X-ray”, “home newly renovated, the smell is quite heavy”. “Home newly renovated, the smell is quite heavy” …… So you are very frightened and worried, and you are torn about whether your child will stay or go. This shows the importance of planning the pregnancy. The embryonic development process from 15-56 days after fertilization is the most active and important period of the entire baby development, as well as the most sensitive to the various factors that cause fetal malformations, and the development of almost all important organs is initiated when you are aware of the pregnancy. It is during this period that most congenital malformations occur, for example: anencephaly occurs 23-25 days after fertilization; cleft lip and palate (“harelip”) occurs in the fourth week after fertilization; congenital deafness occurs in the ninth week. Planning a pregnancy can help you consciously embrace healthy lifestyles and behaviors and avoid risk factors that may adversely harm the fetus, such as alcohol abuse, smoking (passive smoking), drug use, exposure to environmental toxins, and other diseases that may affect the health of the mother and child during pregnancy. Planning a pregnancy allows the couple to be in the best psychological and physical condition to welcome the new life.