People with Down syndrome can get married, but must be careful about having children. Down syndrome, also known as trisomy 21, is a genetic disorder in which the child is born with a congenital form of stupidity. It is very likely that a child will inherit Down syndrome from the mother. Down syndrome patients are congenital chromosomal problems, an extra chromosome 21, the possibility of inheritance to the next generation will be higher. The main clinical features are intellectual backwardness, special facial features and growth retardation, and may be accompanied by multiple malformations. Currently there is no effective treatment, and it can only be prevented through preconception and pregnancy checkups. People with Down syndrome should be cautious about having children, and if they are pregnant, they need to take detailed pregnancy tests to avoid the risk of having a fetus with Down syndrome, so please consult a doctor at a regular hospital for details.