Triage is the process of making a decision to prioritize the need to provide actions and therapy for patients in the emergency room based on the level of emergency. Data on emergency room visits in South Lampung in 2014 were 29,877 cases. RSUD Dr. H. Bob Bazar, SKM Kalianda is the only one of the highest referral hospitals in South Lampung Regency, based on the data obtained there are still cases of unexpected events (KTD), data on improving the quality and patient safety of KTD rates ranging from 1-2%, where one of them is a misidentification of the patient. This study aims to determine the relationship between the length of service of health workers with the ability of triage hospitals in the Emergency Room of RSUD DR. H. Bob Bazar, SKM Kalianda, South Lampung in 2020.This type of quantitative research is analytic design and cross sectional approach. The population and sample were 21 nurses and midwives with a total sampling technique. The data analysis test used in this study uses the Chi-Square test.The results of the study revealed that the frequency distribution of the characteristics of respondents, aged 31-40 years were 9 respondents (42.86%), men were 13 respondents (61.90%) and DIII education were 10 respondents (47.62%). Frequency distribution of length of tenure of health workers, with the category of new tenure of 11 respondents (52.4%). Frequency distribution of the ability of triage hospitals for health workers, with the category of incapacitated as many as 8 respondents (38.1%). There is a long-term relationship of work with the ability of triage hospitals health workers. The results of the analysis were obtained (p-value 0.024 <α 0.05). OR: 15,750. It is expected that the management of RSUD Dr. H. Bob Bazar, SKM Kalianda in order to be able to carry out direct supervision related to the ability of triage hospitals for health workers, as well as providing training for health workers on duty at IGD who have not received triage hospital training.