Aim of the study is to assess the severity of addiction and personality traits among opiates dependent patients ; study the therapeutic factors of group psychotherapy among opiates dependent patients and to study the relation between the therapeutic factors of group therapy and the relapse/sobriety outcome on opiates dependent patients. The study includes 75 patients in two groups. Group I: 45 opiate dependent patients attending the group sessions of this research. Group II: 30 opiate dependent patients receiving other modes of treatment other than group psychotherapy. Group psychotherapy formed of 15 sessions is conducted for group I. Group I and II were subjected to the following: All patients are diagnosed according to the ICD10 discipline, Structured Interview (ICD10), Addiction Severity Index, Rotter Test for locus of control, Eysenck Personality Questionnaire, Personality Assessment Scale (PAS) and group I were subjected to Yalom test for assessing group therapeutic factors.Conclusion: The outcome of the group I of the study who received at least one and half month hospitalization containing 15 sessions of group therapy was more favorable, and relapse rate was lower than group II who received modes of treatment other than psychotherapy.