Persistent air leaks (PAL) is a common complications after pulmonary operation. Risk factors include operationrelated and general factors. At present， stapling device, staple line buttressing, pleural tent, and pneumoperitoneum are the main methods for management. This review described the definition, risk factors, qualitative and quantitative evaluation, and recent progress in air leak prevention and management.
Prolonged air leak (PAL) is one of the most common complication in patients underwent pulmonary resection. The prevention and treatment of PAL are important for the quick recovery of these patients. In this review, we summarized systematically four aspects of PAL including the clinical definition of PAL and influence factors, common risk factors and prediction model, prevention and perioperative management, and postoperative treatment.