Introduction: Insomnia is a common sleep disorder in which, one is unable either in sleep onset or its maintenance and continuity. The aim of this study was to find out the effect of neurofeedback training on improving sleep quality of patient with Insomnia.

Materials and methods: The present study is a Semi-experimental and applied type of research in which pre-test and post-test of two groups, including interventional and control are compared. Statistical population was all the patient with insomnia referring to psychological-psychiatrical clinics of Isfahan placed in region 3& 7 who were selected randomly. In this respect, 20 volunteer patients were chosen and placed into groups via random sampling. Besides, Pittsburg Sleep Quality Index (PSQI) was used for evaluation of Sleep quality. Data analysis was done via covariance statistical method using SPSS 18. 

Findings: The results showed that neurofeedback training has significantly improved the sleep quality of patients. The Markova analyses showed that 91/8% individuals' difference in the subscales of sleep quality was due to the membership of groups.

Discussion &Conclusion: Neurofeedback training can be a safe alternative compared with other treatments for insomnia. Changing the brain waves will lead to some changes in the brain. After treatment, each change was made in electrical activity of brain causes re-organization in the whole bio-electrical system and makes a comprehensive, natural and normal reaction and reflection in the brain which leads to improvement of sleep quality.