Purpose: The purpose of this study was to identify the levels of xerostomia, halitosis and salivary pH in older adults. Methods: A convenience sample of 193 elders was recruited from two senior care hospitals and two senior welfare offices, one in Gwangju City and, one in Chonnam Province. We measured xerostomia, halitosis and salivary pH using a questionnaire, halimeter, and BCP test paper (pH 5.6~7.2). Data were analyzed using descriptive statistics, t-test, one-way ANOVA, and Pearson correlation with SPSS 17.0 program. Results: There were significant differences in xerostomia according to gender (t=3.98, p<.001), education (t=3.41, p=.001), residence (t=5.47, p<.001), alcohol consumption (t=3.50, p=.003), and tooth brushing (F=4.86, p=.009), number of illnesses (F= 6.43, p<.001), and number of medications (F=7.32, p<.001). There were significant differences in salivary pH, according to marital status (t=2.06, p=.041) and residence (t=3.41, p=.001). Xerostomia was significantly correlated with salivary pH (r=-.47, p<.001). Conclusion: The results indicate that older adults need continuous observation and nursing intervention programs for xerostomia, halitosis, and salivary pH.