Research is being conducted on the risk factors and outcomes of pulmonary hemorrhage in preterm infants, with some studies focusing on those born before 32 weeks. The investigations appear to involve various aspects, including prediction, clinical presentation, and potential management strategies to reduce the risk of hemorrhage. Different studies are exploring different approaches, such as the use of artificial intelligence, pulmonary surfactant, and nomograms to predict and manage hemorrhage in preterm infants.