A systemic ultrasound does not require a 4D ultrasound. Systemic ultrasound can clearly understand the development of the fetus, the development of the brain, trunk, limbs and internal organs, as well as the amniotic fluid and placenta. This test can effectively rule out fetal malformations and detect and treat the condition in time. If the fetus has serious malformations, the pregnancy should be terminated in time to avoid the economic and social burden of the family after the birth of the malformed child and the negative consequences.