The increase in the frequency and duration of depression with age is an important psychological problem in the elderly. If depression is not treated in old age, it produces adverse results such as early death, increased risk of suicide, decline in functioning and impairment of general health. Depression is less common in older people than in young people. However the risk of suicide is higher than in young people. In depressed elderly patients whose life expectancy and quality is falling, priority is given to care content; preventing suicide attempts, increasing self-care, and supporting and informing the elderly and family in care and treatment. A depressed elderly has a longer time to respond to treatment than younger people. However, it is worth spending time and effort to improve the quality of life by removing the old person from the mood of the depressed person.