The neonatal medical team organized experts to try their best to rescue the premature baby who was only 770g. The experts repeatedly discussed the condition and adjusted the treatment plan in time. The nursing team took good care of the baby and guarded the baby 24/7 by shifts. At the time of discharge, the baby's vital signs were stable and her weight had reached 2800 grams. This treatment has set a record for the youngest preterm baby with critical condition and the smallest surviving gestational age since the establishment of our department!