This book primarily examines the clinical utilization of TMS (Transcranial Magnetic Stimulation) and tDCS (Transcranial Direct Current Stimulation) for various psychiatric conditions including major depressive disorder, bipolar disorder, schizophrenia, substance use disorders, obsessive-compulsive disorder, attention deficit hyperactivity disorder, autism spectrum disorders, anxiety disorders, post-traumatic stress disorder, sleep disorders, and neurocognitive disorders. This book is tailored for students in clinical psychiatry, mental health professionals, and researchers specializing in psychiatric studies. It systematically presents the safety and efficacy of TMS and tDCS in the context of psychiatric disorders, while standardizing treatment protocols and operational techniques. The ultimate goal is to provide guidance for the clinical implementation of TMS and tDCS and to promote the standardization of these treatment modalities in the future.