This community-based cluster randomized trial evaluated the efficacy of a 4-week multimedia educational intervention followed by telephone consultations at Weeks 12 and 24 on the selection of a hospice program for end-of-life care and completion of an advance directive (AD) in case of future advanced dementia. One hundred twenty-three cognitively intact older adults from five community centers in Taiwan were randomly assigned to two groups. The study showed that 100% of participants in the intervention group (two community centers, n = 52) selected hospice program care for end-of-life care and signed ADs, whereas those in the control group were less likely to do both ( p < .001). Participants in the intervention group also had a positive change in knowledge, subjective norms, perceived behavioral control, and behavioral intention of advance care planning (ACP) for advanced dementia. The theoretically based multimedia educational program was effective in assisting ACP implementation and completing ADs among community-dwelling older adults.