First, the aged should forestall damage themselves. Lately, the dementia of the older individuals’s injury and suicide are common, and there are two varieties of the reason: one is the psychological vulnerability, lack of self-care skill, and don’t wish to increase the burden to the family, and want to commit suicide; the other is morbid manifestations, because of the degeneration of the brain tissue atrophy, patients under the domination of the melancholy, hallucinations or delusions appear self damage. No matter which type, they want relations’ patients psychological works, at the identical time, perform complete care, and intently observe suspicious traits …