Infectious diarrhea is one of the major public hygienic health problems in the world. Although the elderly population is particularly susceptible to encountering infectious diarrhea， there is few scientific research specifically focused on analyzing the pathogenic microorganisms in those over 60 years old. Therefore， this paper analyzes 151 literatures published after 2000， examining the fundamental characteristics of annual publication numbers， publishing institutions， and keywords. The information include biological characteristics and prevalence patterns of the three most frequently reported pathogens—Salmonella， Norovirus， and diarrheagenic enteropathogenic Escherichia coli—are summarized in order to provide theoretical references for preventing and controlling infectious diarrhea in elderly individuals.