Objective: To explore the effect of rehabilitation training combined with psychological intervention on cognitive function and mental behavior of dementia patients. Methods: A total of 142 patients with dementia from April 2015 to September 2016 were enrolled in this study. The patients were randomly divided into control group and experimental group. Among them, routine treatment was performed in the control group. In the control group, (MMSE) and daily living ability scale (ADL) were used to determine the MMSE and ADL scores of the two groups, and the patients were followed up for 6 months.