Violence behaviour is a maladaptive form of anger response that is dangerous and can hurt yourself, others and the environment. Therefore it is a concern for health workers to apply an effective and appropriate therapy to overcome these problems. This study was aimed to compare the differences in Cognitive Behavior Therapy (CBT) and Assertive Training (AT) in controlling violent behavior in schizophrenic patients.This study was used a quasi experimental pre-post test control group design.The number of samples was 30 respondents and taken by purposive sampling technique based on inclusion criteria. Samples of this study were schizophrenic patients with violent behavior totaling 30 people consisting of 10 people in the treatment group I who were given a standard of nursing care and CBT,10 people in the treatment group II who were given a standard of nursing care and AT and 10 people in the control group who only got the standard nursing behavior violent behavior.The results showed that there were differences in the patient's violent behavior between the treatment groups given CBT, AT and the control group before and after the intervention was given with CBT p=0.021 and ATp =0.032.There was a significant difference between CBT and AT in controlling violent behavior with a value of p=0.015. Based on the mean difference values, CBT have been better than AT in controlling violent behavior. CBT can improve patient's ability to control violent behavior. We recommend that CBT can be applied in health and community services.