Eating poorly in the first trimester of pregnancy may have certain effects on the pregnant woman and the fetus. Poor eating in the first trimester of pregnancy may be caused by changes in hormone levels in the body, weakened peristaltic function of the gastrointestinal tract and other reasons, leading to nausea and vomiting, loss of appetite and other symptoms in pregnant women. However, the first trimester of pregnancy is the period of embryo formation and development of various fetal organs, and eating poorly may lead to malnutrition of the pregnant woman or restrict the growth and development of the fetus in the uterus. Pregnant women can stimulate their appetite by improving the structure of their diet and the way it is cooked, and by adding a reasonable mix between the color, aroma and flavor of food. A light diet with less intake of oily food can ease the symptoms of pregnancy sickness. Regular and proper maternity checkups are recommended in the first trimester of pregnancy. If vaginal bleeding and lower abdominal pain occur, timely hospitalization is recommended.