Explore the Impacts of One Session Theta Burst Stimulation Over Cerebellum in Adults With Autism Spectrum Disorder

Inclusion Criteria: * Adults with autism spectrum disorder (≥18 years old), confirmed by Autism Diagnostic Observation Schedule. Exclusion Criteria: * Previous or current severe neurological disorder such as epilepsy, visual or hearing impairment. * Previous or current severe systemic disease such as cardiovascular disease, diabetes or infection. * Previous or current severe brain injury * Implementation of metal materials such as pacemaker or medication pump * Previous or current severe psychiatric disorders such as schizophrenia, bipolar disorder or substance abuse * Pregnancy * Individuals with a significant brain abnormality such as intracranial space occupied lesions * History of brain surgery or nervous system infection, such as meningitis and encephalitis * Concurrent use of medications which increased the risk of seizure attack * Participate another clinical trial within one month * Skin trauma on application site * Individuals suffering from multiple sclerosis * Individuals with a large ischemic scar * Individuals suffering from sleep deprivation during rTMS procedures * Individuals with a heavy consumption of alcohol * Current taking antiepileptic drugs * Individuals with a migraine headache from increased intracranial pressure * Unable to complete MRI scan Withdrawal criteria: * Seizure attack during study period * Autistic symptoms worsened obviously during study period * Extreme agitation or irritability during study period * Participants request * Take antiepileptic drug during study period