The fetus is two weeks too small, that is, the mother\’s gestational age is two weeks smaller than the actual size of the fetus. This situation is relatively common clinically, but requires attention. Because a small fetus may lead to low birth weight, premature birth, placental dysfunction and other problems, it will have an impact on the health of both mother and baby. This article will introduce relevant knowledge about the fetus that is two weeks too small from the aspects of causes, examination, and treatment. 1. There are many reasons for a small fetus. Common ones include: fetal growth retardation caused by genetic factors in the first trimester; maternal malnutrition, pregnancy-induced hypertension syndrome, placental dysfunction and other factors that affect fetal growth in the second and third trimesters; pregnant women suffering from Certain diseases, such as diabetes, hyperthyroidism, etc. 2. Checkup It is very important for pregnant women to have regular prenatal checkups during pregnancy. If a pregnant woman suspects that her fetus is too small, she can confirm it through the following examinations: Ultrasound examination: The fetal head circumference, abdominal circumference, femur length and other indicators can be measured to determine whether the fetal size is normal. Prenatal screening: Use some indicators in the blood of pregnant women, such as progesterone, HCG and AFP, to help determine whether the fetus is stunted. Non-invasive prenatal genetic testing: By collecting blood samples from pregnant women, isolating the free fetal DNA of the fetus, and conducting genetic testing, the risk of certain genetic diseases and the relationship between certain genetic variations and fetal growth and development can be detected. 3. Treatment If the fetus of a pregnant woman is two weeks too small, timely treatment is required. The treatment methods include the following aspects: Nutritional adjustment: Pregnant women should increase their intake of nutrients such as protein, vitamins, and minerals to ensure that they have sufficient nutrition to ensure the growth and development of the fetus. Monitoring: Pregnant women need regular ultrasound examinations to track the growth of the fetus, detect problems early, and take measures. Disease treatment: If pregnant women suffer from certain diseases, such as diabetes, they need timely treatment to control the disease and avoid any impact on the growth and development of the fetus. Proper rest: Pregnant women should adjust their work and rest appropriately to ensure adequate sleep time to avoid excessive fatigue, which may affect fetal growth and development. In short, pregnant women and doctors should pay attention to the fact that the fetus is two weeks too small. Pregnant women should ensure that they have adequate nutrition and proper rest, undergo regular prenatal check-ups, detect problems in time and take measures to ensure the healthy development of the fetus.