Down’s syndrome babies usually have two hands, one hand is relatively rare. Down’s syndrome is also known as Down’s syndrome children, through the palm, also known as broken palm lines, is a very special palm lines, palm a horizontal line through, this kind of babies are prone to through the palm, usually two-handed through the palm, a hand through the palm is relatively rare. In addition to the through-palm, Down’s syndrome babies also have special facial features, such as widened eye spacing, collapsed nose, canthus, small eye lobes, upward slanting of the outer side of the eyes, low-set ears, and some of them are mentally retarded and have backward growth and development. After pregnancy, you can go through NT test, Down’s syndrome screening, non-invasive DNA test, amniocentesis and other programs to find out the size of the chances of the fetus suffering from Down’s syndrome, there are chromosomal abnormalities are recommended to terminate the pregnancy to deal with.