The abdominal circumference of 33 weeks includes the abdominal circumference of pregnant women and fetuses, as follows: a. Pregnant women’s abdominal circumference: in general, the abdominal circumference of pregnant women in the middle and late stages of pregnancy does not exceed 95-100cm, but it is specifically related to the initial figure of pregnant women and the number of gestational fetuses. Second, the fetal abdominal circumference: 33 weeks of gestation, the fetal abdominal circumference is usually about 30cm, according to the fetal growth and development, maternal weight will vary. The fetal abdominal circumference is too large or too small is not conducive to fetal development. 1, abdominal circumference is too large: if the abdominal circumference is too large, suggesting that there may be a huge baby, excessive amniotic fluid, gravida or combined abdominal tumors and other abnormalities, can cause abdominal circumference to grow too fast. It is recommended to go to the hospital for further examination to determine the condition of fetal growth and development through ultrasound and other means to find the cause for symptomatic treatment. Pay attention to a reasonable diet to avoid excess nutrition leading to abnormalities such as huge children, which is not conducive to delivery; 2. abdominal circumference is too small: if the abdominal circumference is lower than normal, it may be due to fetal stunting caused by insufficient diet and nutritional intake. It is recommended that pregnant women should increase nutrition to avoid fetal dysplasia due to lack of vitamins and proteins, take appropriate calcium supplements, maintain nutritional balance, ensure adequate sleep, and also have regular obstetric checkups.