A descriptive study was conducted on 30 elderly people selected by convenience sampling to assess their knowledge about warning sign of Alzheimer disease (AD) at Nirashrit Vridh Aashray Grih, Jabalpur.Over all knowledge score shows that 15 elderly peoples (50%) scored between 13-18 revealed poor knowledge towards warning sign of AD. Three elderly people scored 19-24% shows good knowledge whereas 11 elderly people scored between 13-18% shows average knowledge. Only 1 elderly people scored between 0-6% shows very poor knowledge.Here it can be interpreted that highest percentage 50% of elderly people had poor knowledge regarding warning signs of AD.Percentage wise distribution of elderly people according to their age group shows that majority (43.33%) of the elderly peoples was in the age group of above 70 years of age.Percentage wise distribution of elderly people according to their gender reveals that most (67.67%) of the elderly people were females.Percentage wise distribution of elderly people according to their education status depicts that highest percentage (33.33%) of them was in the higher secondary school education.Fifty percentage of elderly people had family history of Alzheimer diseases and the remaining 50 & of them were in the group of no family history of Alzheimer disease. Percentage wise distribution of elderly peoples to having a previous information on Alzheimer disease (53.33%) was exposed.Percentage wise distribution of elderly people according to their source of information reveals that majority (63.33%) of them hot knowledge from health personnels.