Objective:To explore the role of hierarchical teaching based on the "competency-based" concept in the standardized training of respiratory nursing interns.Methods:A total of 70 nursing interns who came to the Department of Respiratory Medicine in Beijing Jishuitan Hospital for standardized training from September 2019 to August 2020 were selected as the study subjects. They were randomly divided into the study group and the control group by coin tossing method, 35 in each group. The study group used hierarchical teaching based on the "competency-based" concept, while the control group adopted conventional hierarchical teaching. The nursing ability and teaching quality of the two groups of nurses were compared. SPSS 23.0 was used for t-test and Chi-square test. Results:The theoretical knowledge scores of the nurses in the two groups after the standardized training [(95.29±3.13), (86.29±5.13)] were higher than those before the training [(78.22±4.48), (77.29±5.13)]. The scores of theoretical knowledges, operation skills, medical record reporting, and the comprehensive quality scores of the study group after the standardized training were higher than those of the control group, and the differences were statistically significant ( P<0.05). The satisfaction of teaching quality in study group was higher than that in control group, and the difference was statistically significant ( P<0.05). Conclusion:The hierarchical teaching based on the "competency-based" concept can significantly improve the teaching quality in the standardized training and the comprehensive quality of respiratory nursing interns, which is worthy of application.