Whether multiple sclerosis can have children is analyzed as follows: First, patients with multiple sclerosis, if they are mildly ill, they can have children during the stabilization period of their symptoms, because they must stop using hormones during the stabilization period of their symptoms, and they can only get pregnant in about half a year. The possibility of fetal teratogenicity is relatively small, because multiple sclerosis patients stop using hormones or pregnancy, will cause changes in the body’s immune system, may also cause the symptoms of re-emergence. Second, for patients with more serious multiple sclerosis, with limb movement dysfunction, or with bowel dysfunction, can not stop using hormone patients, patients are not suitable for having children. Because long-term use of hormones, hormones in pregnancy on the child has a teratogenic effect, so such patients have children may aggravate their own condition, but also lead to fetal deformities.