The purposes of the present study were to examine the collective perceptions and attitudes of lay person relying on the social representation theory. The sample consisted of 110 adults(44 men and 66 wemen). Data were obtained by asking the respondents to complete ten sentences, Which begin with the mentally ill is. The results were revealed as follows : 1. Lay person show a great dispositional accounts about the mentally ill. 2. Lay person have not controllable factors the causal perception about mental illness. 3. Lay person have negative feeling about the mentally ill. 4. Lay person show a great accounts about the effects of mental illness. 5. Lay person emphasis love and caring as well as socio-medical strateges. Overall, lay person have negative attitudes toward the mentally ill and mental illness. Correct and in-depth understanding of lay persons` perceptions and attitudes will help us map out future directions and development the public mental health education programs. Findings of the study could serve as a baseline data developing the new programs for mental health education.