33 weeks pregnant, the fetal abdominal circumference of the femur length is small, may be a pregnancy week accounting error or fetal growth and development restrictions and so on, it is recommended that you can give observation or nutritional supplementation and other treatments. 1. Incorrect accounting of gestational weeks: pregnant women 33 weeks pregnant check out the fetal abdominal circumference of the femur length of small, this time you need to recalculate the gestational weeks, if because of an error in the accounting of gestational weeks caused by the size of the fetus appeared to deviate, this situation is normal. 2. Fetal growth and development restriction: If the fetus has growth and development restriction due to various reasons, pregnant women need to go to the hospital as soon as possible, and under the guidance of the doctor to give the appropriate anticoagulation (low molecular heparin), intravenous nutrition (fat milk, etc.) supplementation and other treatments. Follow the doctor’s instructions for regular ultrasound examination. If the abdominal circumference and femur length of the fetus are still small, attention should be paid to exclude the possibility of chromosomal abnormality or fetal malformation, and diagnosis can be made by transabdominal umbilical vascular puncture if necessary. Pregnant women during pregnancy must pay attention to more nutrition, pay attention to more rest, avoid staying up late, but also pay attention to avoid the influence of various adverse factors, regular obstetric examination, find problems at any time at any time to deal with.