How long does a 30-week premature baby stay in hospital?

30 weeks of birth is a very premature baby, its hospital stay should be based on the child's specific conditions to determine, because very premature baby is easy to cause lung infection, liver dysfunction and other complications, need to closely observe the patient's vital signs. When the child reaches maturity, cardiopulmonary function stability, weight up to 2000~2200 grams, sucking ability can be discharged.