There are differences in ultrasound examination charges in different regions and hospitals of different levels. Generally, the general gynecological ultrasound in a tertiary hospital is around 150-200 yuan, while abdominal 2D ultrasound requires holding urine if it is an examination, and vaginal ultrasound does not require holding urine. The 4D ultrasound is generally applicable to the major abnormality examination during pregnancy, and the charge is about 300 yuan. 4D ultrasound can clearly display the baby’s real-time dynamic activity images, which can provide accurate scientific basis for early diagnosis of fetal congenital physical malformations and congenital heart diseases. The best time to have 4D ultrasound is between 20-28 weeks of pregnancy. 4D ultrasound can examine the body surface of the fetus and can detect conditions such as cleft lip, spina bifida, heart and skeletal dysplasia.