It is best not to eat cold food in the first trimester, also known as early pregnancy. After eating cold food in early pregnancy, it will stimulate the mucous membrane of the gastrointestinal tract, resulting in vasoconstriction of the stomach, reduced secretion of gastric juice, indigestion, loss of appetite, abdominal distension and other digestive symptoms, which affects the nutritional intake during pregnancy. If the cold food is also somewhat spicy and unhygienic, it is extremely easy to develop acute gastroenteritis, causing strong gastrointestinal cramps and diarrhea, which may induce uterine contractions at this time. As for the unstable development of embryo in early pregnancy, if you eat too much raw and cold food, it may lead to abdominal pain, vaginal bleeding and other symptoms of pre-eclampsia, which is not conducive to the healthy development of the fetus. Therefore, in the early stage of pregnancy, especially pregnant women with poor gastrointestinal function should avoid eating raw and cold foods. Pay attention to regular diet, eat less and more meals, eat more food rich in high quality protein and easy to digest, and avoid too much greasy and spicy stimulating food. In addition, you should pay attention to folic acid supplementation in the early stage of pregnancy, which can effectively prevent neural tube malformation and other diseases in the fetus, and pay close attention to the growth and development of the fetus by regular maternity checkups.