It is very important to pay attention to the daily living habits of the elderly. Most elders do not intentionally go to unfamiliar or uncharted places before they get lost. Rather, they overestimate their ability in recognizing the way, and even if they go to familiar places, they still get lost and become lost. If caregivers have a basic understanding of the daily habits of the elderly, for example, from 8:00 a.m. to 9:00 a.m. on Mondays to Fridays, the elderly used to go to the parks of the neighboring housing estates to do morning exercises with their friends, this would be valuable clues that can help to successfully find the lost elderly.