Pediatric hyperactivity syndrome and pediatric tic-obstruction syndrome are both common disorders of the pediatric nervous system, and are both distinct and related in terms of symptomatology. As many parents lack a fundamental understanding of the two, they often have doubts and enter a misunderstanding. The following is a brief introduction: I. Concept (1) hyperactivity syndrome in children is referred to as ADHD. The clinical features are a group of syndromes in which children with normal or near-normal intelligence exhibit age-inappropriate distraction, reduced attention span, excessive activity regardless of the occasion, emotional impulsivity, and cognitive impairment and learning difficulties. (2) Tourette’s syndrome, also known as polysyndactyly, is a syndrome or behavioral disorder characterized by motor and speech abnormalities and local muscle twitching. Second, clinical manifestations (1) hyperactivity: excessive activity, mostly in early childhood began, after entering elementary school, small movements in class non-stop, buttocks wriggling in the chair, like to provoke others, concentration difficulties, easily distracted by the environment, emotional instability, will shout or coaxing for no reason, learning difficulties, some children with perceptual activity disorders, spatial orientation disorders, often easily attracted by external stimuli in They often forget things during daily activities. (2) Multiple tic disorder: the age of onset is 2 to 15 years old, mostly before the age of 21, for a group or groups of muscle recurrent, involuntary, repetitive, rapid, purposeless movements. It often starts with the face and can involve multiple groups of muscles in the limbs and trunk. Some children have various forms of vocalizations, ranging from grunting to barking, odd toned pronunciations, and rude obscenities. Third, the differences and links: tic obscene syndrome can be accompanied by attention disorders, hyperactivity syndrome, learning difficulties, sleep disorders, discipline problems, moral problems, anxiety, depressive personality and other behavioral abnormalities. In contrast, ADHD is hyperactivity not tics, and there are attention deficits and impulsivity without the group or groups of muscle tics and throat clearing and swearing that exist in children with tic-obscene syndrome.