Objective To search and obtain the evidence on prevention and management of postoperative pulmonary complications in patients undergoing coronary artery bypass grafting, so as to provide evidence-based reference for nursing practice. Methods Relevant literature was searched following the 6S pyramid model in electronic databases and websites. Quality of the literature and levels of evidence were established using the assessment tools of the Joanna Briggs Institute(JBI). Results A total of 19 publications were included,involving 3 guidelines, 4 evidence summaries and 12 systematic reviews. Six aspects of 27 pieces of evidence were summarized, including patient assessment, preoperative rehabilitation, anesthesia and analgesia, oropharyngeal decontamination and ventilation,postoperative rehabilitation, patient supervision and education. Conclusion The best evidence on prevention and management for postoperative pulmonary complications in patients undergoing coronary artery bypass grafting can provide evidence-based references for clinical practice. In the phase of evidence application, the evidence should be implemented based on clinical environment and patients′ preference.