To induce labor at 22 weeks of pregnancy, you need to obtain a certificate of induction of labor from the birth control department, and the certificate of induction of labor can be admitted to the hospital for induction of labor after examination by the medical department of the hospital. After admission to the hospital, routine blood, urine, liver and kidney functions, hepatitis B five, immune system three, white belt routine, ultrasound, electrocardiogram and other tests should be completed to make sure that there is no contraindication to induce labor and then the labor can be induced. The way to induce labor at 22 weeks of pregnancy is to induce labor by intra-amniotic injection of Levanox. 1-3 days after the injection of the induction drug, labor will be initiated, the opening of the uterus will be opened and the fetus and placenta will be expelled from the uterus, and the contraction of the uterus will be observed.