Under normal circumstances, 32 weeks fetal abdominal circumference in 238.7 ~ 285.3mm, 300mm slightly larger than the normal range, but most of them are normal phenomenon. Abdominal circumference refers to the length of a circle around the abdomen at the level of the navel, and is usually measured from the 16th week of pregnancy, and the values of abdominal circumference, biparietal diameter, head circumference and femur length can be used to roughly determine the development of the fetus. Fetal abdominal circumference of 300mm at 32 weeks is slightly larger than the normal range, but it is also a normal phenomenon, and pregnant women should pay attention to appropriate diet control and regular obstetric monitoring. Pregnant women should pay attention to rest more in daily life, keep a happy mood, if there is any discomfort should go to the hospital in a timely manner, under the guidance of the doctor’s treatment.