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Obsessive compulsive disorder (OCD), which is characterized by obsessions and compulsions, is usually a chronic, heterogeneous disorder with marked deterioration in social and vocational functioning. According to the World Health Organization, OCD is one of the top causes of illness-related disability worldwide. Although various pharmacological treatments are proposed as effective for the treatment of OCD cognitive behavioral therapy (CBT) represents an elegant option of treatment, either itself or together with pharmacological treatments. Behavioral therapy (BT) which aims behavioral change thorough the exposure and response prevention (ERP) has been using effectively but with partial successful since 1960’s. Partial success that was achieved thorough BT was improved by adopting cognitive techniques and methods as from 70’s. Although research conducted using individual CBT reported response rates up to 83%, as from 2000’s Cognitive behavioral group therapy (CBGT) was proposed an advantageous alternative of treatment with similar effectiveness. However later research suggested that CBT in a group setting could be performed effectively, but that individual CBT was more effective. Nevertheless, it is difficult to know which CBT modality is more effective in the absence of head-to-head comparison. Taking into account above-mentioned consideration, we discuss pros and cons of CBGT for OCD. CBGT can be cost effective in comparison to individual therapy and has unique features like observational learning opportunity. On the other hand, subtle group factors such as lack of group cohesion or dysfunctional interpersonal interactions between the group members can be problematic and toxic to the group therapy process. Although research suggests that individual therapy was more effective for the OCD, to us preliminary preparation might increase the efficacy of CBGT.