摘要:Abstract The main purpose of this research is to determine effectiveness of QEEG- Guided Neurofeedback therapy in decreasing OCD symptoms. Twelve patients were selected from Atiyeh institution in Tehran- Iran and they are placed in 3 situations randomly which are neurofeedback, drug therapy and waiting list. Padua Inventory is administered for all patients as pre- test and post- test in 10 weeks. The results of this research using kuruskal – Wallis and Mann-whitney U test were analysed. It's resulted that neurofeedback treatment may be used as a new treatment approach for treating OCD.