Lung-promoting injections can still result in a full-term birth. At present, for pregnant women with preterm labor at 28 weeks to 34⁺⁶ weeks, as well as pregnant women who need to terminate their pregnancy before 35 weeks due to other medical indications, they are given to promote the maturation of the fetal lungs, and betamethasone and dexamethasone are commonly used to reduce the incidence of respiratory disorders, such as neonatal respiratory distress syndrome, that occur after the birth of the fetus, and if symptoms of preterm labor or indications of early termination disappear, they can continue to wait until full-term birth. If symptoms of preterm labor or signs of early termination of pregnancy disappear, the labor can be continued until full term. When used in patients with diabetes mellitus, because of its effect on maternal blood glucose, it is recommended that blood glucose should be closely monitored during and after the process of promoting fetal lung maturation to avoid serious complications such as diabetic ketoacidosis and hyperosmolar coma.