The lack of appetite and desire to eat at the beginning of pregnancy is mainly caused by the early pregnancy reaction, but it may also be related to the woman’s gastrointestinal disorder. The increase of estrogen and progesterone secreted by the corpus luteum of the ovary after pregnancy will have a certain inhibitory effect on the function of the gastrointestinal tract, and women will experience a loss of appetite, also known as early pregnancy reaction, which is a normal physiological reaction. This is a normal physiological reaction. Most women experience it in the early stage of pregnancy, and it can be relieved by resting in moderation, eating a small number of meals, eating light porridge or fruits, etc. If necessary, it can also be treated by infusion. The lack of food can easily lead to electrolyte disorders, which can adversely affect the body of the pregnant woman and the growth and development of the fetus. The phenomenon of women not wanting to eat will gradually improve after the third trimester, and if they suffer from gastrointestinal diseases, they need to be actively treated with appropriate medication.