Mental disorders are characterized by disruption in the ability to judge reality or poor insight. Hallucinations are the primary symptom of schizophrenia, and it includes many nursing diagnoses found in psychiatric hospitals, where patients have developed thoughts and imaginations to deal with the problem, and they are unable to control whether it is real or not. The objective of this study was to describe the effectiveness of cognitive behavior therapy towards hallucination intensity in schizophrenic patients. The articles search for literature review was limited to English and Indonesian, which were accessed from internet databases, namely: Elsevier, google scholar, and national libraries with keywords cognitive behavior therapy and hallucination intensity. This literature review showed that the provision of cognitive behavior therapy has a significant effect on the intensity of hallucinations in schizophrenia patients pre-therapeutic and post-therapeutic intervention. Cognitive behavior therapy was very effective in reducing the intensity of hallucinations in schizophrenic patients.