摘要:AbstractRegarding to personality profile progress, psychologists focus on the subject that behaviors, dispositions, thought style, li fe experiences and problem –solving methods are the unique characteristics of every one and the role of individual differences and problem-solving methods is very note worthy in this respect. Therefore, the goal of this research is the study on personality traits and its effect on correct and incorrect methods of problem –solving by people who select the inefficient methods to solve their problem, maybe guide them to psychosomatic disorders as we can refer to cancer disorders. In the current study, regarding to the personality traits of patients suffering cancer disease and the comparison between personality traits of patients suffering cancer disease and non-ill people, 200 individuals were chosen among the clients referring oncology sections and radiotherapy of Tabriz Imam Khomeini Hospital (available samples) and 200 individuals were chosen among non-ill individuals who were uniformed in respect of age, sex and social and economical status. The selection method was a descriptive and post-event method. MMPI (short form) was performed on them. The collected data resulting of questionnaire performance was analyzed by SPSSS software and it was compared to in the significance level of 0.05 and 0./01 by using T-test. The results of analyzing data indicates that personality traits of patients suffering cancer disease and non-ill people was different in the significance level, lower than 0.05. In other words, cancer patients are higher than non-ill people in Pa, Hd, Sc, D, Hs factors. Pathological personality traits in individuals especially in Pa, Hd, Sc, D, Hs factors could have major role as proner and causer of cancer disease.