Abstract: Objective: To summarize the best available evidence for the prevention and reconstruction of perinea injury among natural labor women and to provide decision-making reference for nurses and midwives. Methods: We systematically searched websites of professional organizations, websites of clinical practice guidelines and databases for guidelines on prevention and reconstruction of perineal injury, used AGREE II to evaluate the chosen guidelines, selected the A-level guidelines to translate, integrated the same or similar recommendations according to certain principles on the premise of ensuring the original meaning of these recommendations; and selected recommendations within the responsibilities of nurses and midwives in China through the expert consultation. Results: We have searched 331 articles and selected 4 A-level guidelines from the currently available 7 evidence-based guidelines, and integrated from 4 A-level guidelines 92 recommendations to 63 recommendations. However, only 27 recommendations can be delivered by nurses and midwives in China according to experts' opinions. Conclusion: The evidence in this field is abundant, but most beyond the nurses and midwives' permission. More practical exploration and scientific research are necessary to enrich the related evidence for nurses and midwives.

Key words: perinea injury; vaginal delivery; prevention; reconstruction; evidence summary