慢性肺疾病(chronic lung disease,CLD)是早产儿最常见并发症之一。随着我国新生儿重症监护技术的发展,极低出生体重儿存活率逐渐增加,CLD已成为新生儿科医生面临的重要问题。在CLD的防治上,肺表面活性物质替代治疗、新的机械通气策略、限制液体输入和利尿剂的使用、最优化的营 Chronic lung disease (CLD) is one of the most common complications of premature infants. With the development of neonatal intensive care technology in our country, the survival rate of very low birth weight children has gradually increased, and CLD has become an important issue for neonatologists. In the prevention and treatment of CLD, pulmonary surfactant replacement therapy, new mechanical ventilation strategies, restrictions on the use of liquid inputs and diuretics, and optimized battalion