this research is based on the causal-comparative method that was done among diabetes and psoriasis patients who were referred to treatment centers and the Diabetes Association in Tehran.A sample of 85 subject included 30 subjects with psoriasis,25 diabetes type I and 30 healthy people, were selected by available sampling. The subject were assessed by the Young^,s Early Maladaptive Schema Questionnaire (YSQ),Young^,s Parenting Questionnaire and lzarus-folkman^,s Ways of Coping Questionnaire (WOCQ). One-way analysis of variance (ANOVA)showed that psoriasis patients, except for mistrust, impaired autonomy and  performance,entiltlement and enmeshment schemas have more schema scores compared to control group.and in diabetes, results showed that the group has more schema scores in areas of impaired limits, other-directedness and overvigilance and in schemas of  vulnerability of harm, self-sacrifice and emotional inhibition compared to control group. psoriasis patients, have more schemas of emotional deprivation and unrelenting standards and in areas of overvigilance and impaired autonomy and  performance have more schema scores compared to diabetes. The result of parental origins of diabetes father, have more schema scores in areas of other-directedness and impaired autonomy and performance and in schemas of defectiveness/shame, dependence/Incompetence, enmeshment, failure and approval-seeking and in parental origins of diabetes mother, in areas of impaired autonomy and  performance, other-directedness and overvigilance and in schemas of vulnerability of harm or illness, unrelenting standards/hypercriticalness,emotional inhibition and approval-seeking have more schema scores compared to control group. In parental origins of psoriasis father in areas of overvigilance and in psoriasis parents in approval-seeking schemas have more schema scores compared to control group. And in origins parental diabetes father compared to psoriasis patients, have more schema scores in area of impaired autonomy and  performance and schemas of defectiveness, self-sacrifice and enmeshment, the coping strategy of selfcontrol is more used by psoriasis patients compared to the control group.