Abstract: Objective:To analyze the disease spectrum and epidemiological characteristics of 2891 emergency department patients in the Sixth Medical Center of the People's Liberation Army General Hospital. Method:A retrospective analysis of the medical dates of all the patients in the emergency room of the Sixth Medical Center of the People's Liberation Army General Hospital from January 1 st to December 31 st in 2018 were analyzed, including the age of the patients admitted to the hospital, gender, time of treatment, characteristics of disease spectrum, number of days of visits. Result:Among the 2891 patients included in the statistics data, there were 1 593 males and 1 298 females. The male-female ratio was 1.23:1.00. The top prevalence of diseases in the emergency department were the cardiovascular system(1 045/2 891,36.15%), the respiratory system(748/2 891,25.87%) and the digestive system(339/2891,11.73%). According to the distribution of patients' visit time, 10-12 o'clock is is the most in a day(12.7%); according to the seasonal distribution, winter is the largest number of patients visited in the year(26.5%). The average number of days of treatment in the emergency room was 1.58 days, and the longest was 132 days. And 94.1% of patients could be transferred to a specialist or discharged within 3 days.Conclusion:This study revealed both the distribution characteristics of the disease spectrum and the regularity of the consultation time in the emergency department of the Sixth Medical Center of the General Hospital of the People's Liberation Army General Hospital, which is conducive to making corresponding medical preparations before the peak of the disease appears.