Late pregnancy found that the fetal head circumference and abdominal circumference is small two weeks may be pregnancy week accounting error, malnutrition, fetal growth restriction and other reasons, through more observation, supplemental nutrition, find the cause of the symptomatic treatment. 1. Errors in accounting for gestational weeks: Errors in accounting for gestational weeks can result in a small fetal head circumference and abdominal circumference, according to the last checkup comparison and analysis, the results of the analysis of the fetal indicators of normal development rate, without special treatment, the fetus than the actual gestational weeks smaller than the two weeks may be the pregnant woman’s menstrual cycle irregularities, provided by the inaccuracy of the last menstruation caused by. 2. malnutrition: malnutrition or excessive picky eating during pregnancy can lead to fetal head circumference and abdominal circumference of two weeks, usually pay attention to nutritional supplementation, timely increase in protein, energy intake, such as eggs, milk, beef, fish and other foods, to promote the normal growth of the fetus. 3. Fetal growth restriction: after excluding the above factors, do non-invasive DNA testing, amniocentesis and other tests to determine whether fetal malformations, placental abnormalities and other reasons leading to fetal growth restriction, late pregnancy fetal head circumference and abdominal circumference of two weeks, to determine the seriousness of fetal developmental malformations timely treatment. Pregnant women with abnormal placental function need to improve placental microcirculation. If you find that the fetal head circumference and abdominal circumference are smaller than two weeks in late pregnancy, you should go to the hospital and let the professional doctor make judgment and treatment.