Abstract: Objective: To investigate the knowledge and behaviors of oral care among elder people with removable partial denture (RPD). Methods: Totally 102 elder people with RPD were investigated with a self-designed oral care knowledge and behavior questionnaire. Results: Regarding the cleaning of natural teeth, 27.45% and 20.58% of the elder people knew and cleaned natural teeth after each meal, respectively.About 13.73% cleaned the natural teeth by dental floss or oral irrigator and only 6.86% mastered the correct teeth brushing method. Regarding the cleaning of artificial teeth, 33.33% elder peoplecleaned the artificial teeth after each meal correctly and 46.08% didn't master the correct cleaning method. About 18.63% didn't remove the artificial teeth at nightand only 7.84% knew there-examination time. The elderpeople obtained oral care knowledge from dentists or nurses (55.88%) and television or broadcast (43.14%). Conclusion: The elder people with RPD lack of correct oral care knowledge and their oral care behaviors are incorrect. We suggested to enhance health education in the clinic to improve elder people's oral care knowledge and behaviors.