4D cannot distinguish the baby’s personality. 4D ultrasound during pregnancy is mainly used to rule out whether the baby has congenital malformations, etc. It can be used to determine whether the fetus has congenital developmental anomalies, such as cleft lip and palate, hydrocephalus, spinal fracture and the development of various organs. Another important function of 4D ultrasound is to monitor the development of the fetus. Through 4D ultrasound, you can see the baby’s appearance, and you can see the baby’s eyes, nose, jaw, mouth, limbs, internal organs, sex organs, etc., and you can also see the baby’s usual activities and so on. It measures various growth and development indicators and assesses development, but cannot be used to distinguish the baby’s personality. It is recommended to go to a local regular hospital for 4D ultrasound, pay attention to the development of the fetus, and deal with any abnormality in a timely manner.