The study was intended to examine the effect of mental health on old people. Aim: The aim was to estimate the prevalence of mental health in old people and to determine the association of mental health with types of family and gender. Sample: The sample consists of 120 old people from different old age home and family in Rajkot district area. The sample was selected from randomly. Design: 2*2research design was used the present study. Tools: Mental Health was measured through a questionnaire ‘Mental Health Inventory’was used. Test developed by Bhatt D & Gida G. in (1992).The data was analyzed by the t test. Results: There will be no significant difference between Gender and Types of Area in relation to their mental health. Conclusions: Our study demonstrates a higher prevalence of mental health in old people.