Introduction: The ability of nurses to conduct triage greatly influences the success rate of help when patients experience emergency. The aim of the study was to determine the factors associated with the accuracy of the implementation of triage in the X Hospital's Emergency Departments. Methods: The research method that the researcher used was cross sectional approach. The number of samples were 32 respondents. Questionnaire and observation were used to collect the data. Results: Respondents characteristics (age, sex, education, and tenure) with the accuracy of the triage were obtained by age with p value = 0.386, p value = 1,000 for gender, p value = 0.242 for education, and years of work with p value = 0.000162. Knowledge of respondents with the implementation of the determination of triage p value = 0.045 and motivation of respondents with the accuracy of the implementation of triage p value = 0.0017. Conclusion: The accuracy of the implementation of triage has no relationship with characteristics (age, sex, education), there is a relationship between knowledge, motivation and years of work with the implementation's accuracy of triage in the Emergency Room X Hospital. Suggestions are expected by the Hospital to make guidelines, triage algorithms, training, regeneration to improve nurse triage knowledge.