The hands and feet can be seen at the macrosomia. The ultrasound is a very important test during pregnancy, and most hospitals will conduct the test by means of 3D ultrasound or 4D ultrasound. During the examination, the development of the fetus’s limbs, senses, and organs can be seen to determine whether the fetus has any developmental abnormalities, and if there are abnormalities, it is necessary to assess whether the pregnancy can continue. The large screening test is usually carried out between 20 to 24 weeks of pregnancy, this test is required to make an appointment in advance, to avoid missing time, the test does not require pregnant women to hold urine on an empty stomach, as much as possible activities, so that the fetus in the examination process to remain active, conducive to the examination. The examination must be conducted in a regular hospital, and the subsequent maternity examination must be conducted on time.