The purpose of this study was to identify the extent and the type of elder abuse and to examine the overall influence of abuse on abused. A sample of 117 mothers-in-law who lived together their daughters-in-law was used and 7 mothers-in-law among them were interviewed in depth. The major findings were as follows ; 1) the type of elder abuse between dyad which mother-in-law experienced was psychological abuse, verbal aggression and physical abuse. 2) Pychological abuse was the abuse which all elderly women experienced and verbal aggressin was the abuse which most elderly women experienced, but physical abuse was te special event which a few elderly women experienced. 3) The influence of abuse on abused and the extent of elder abuse varied with the type of their experience.