To evaluate the guidelines and expert consensuses on hyperbaric oxygen therapy and provide recommendations for its optimization.

The guidelines and consensuses related to hyperbaric oxygen therapy were retrieved from five Chinese databases，including Wanfang Data，Chinese Science and Technology Periodicals（VIP）database，National Knowledge Infrastructure（CNKI），Chinese Biomedical Literatures database（CBM），and National Medical Journal of China，with the search period set from January 1st 2017 to December 31st 2022. Based on the extracted information，such as title，main responsible author，classification of disease，type of domain，evidence quality，recommendation rating，year of publication，and key points，to determine the inclusion of the literature. The AGREE-China was used to score the included literatures，and the total scores of the two groups with hyperbaric oxygen and non-hyperbaric oxygen experts as the main responsible authors were compared with the scores in each field.

A total of 40 articles were included，among which 35 were consensuses，accounting for 87.5%. Nine literatures with hyperbaric oxygen medicine experts as the main responsible authors were all consensuses. The average rating of AGREE-China is only 28.58. As for the guidelines and consensuses formulated by hyperbaric oxygen medicine experts as the main responsible authors，although there was no statistical significance in the total scores and scores in various fields compared with the control group（P>0.05），the scores were generally low. Except one article ranked in the top 10，the total scores of the remaining 8 articles were lower than the average.

The quality scores of the guidelines and consensuses on hyperbaric oxygen therapy are generally not high，especially in the areas of registration，literature retrieval，grading of evidence quality，formation and grading of recommendation，effectiveness and safety of recommended programs，and other aspects. The hyperbaric oxygen medicine experts need to strive to conduct high-quality clinical studies and actively lead or participate in the development of the guidelines and consensus in this field.

Hyperbaric oxygen; Guideline; Consensus; Quality evaluation; Evaluation criteria