The purpose of this study is to examine the mediating effect of economic stress in the relationship between Perceived Income Inequality and Suicidal Ideation among old adults. To achieve this objective, this study analyzed basic statistics, reliability, correlation, and regression (tolerance and variance inflation factor) with the help of SPSS ver. 18.0. using data of 532 elderlies over 65 years old who live in Jeollanam-do. The main study results were as follows. The result shows the significant medicating effect of economic stress in the relationship between Income Inequality and Suicidal Ideation. Based on these results, political and practical implications are proposed.