Every year, soon after the entrance of new students, there are many parents who bring their newly enrolled first grade children to the hospital. Parents complain that their teachers think their children are hyperactive and ask them to be brought to the hospital for examination, so is it ADHD? So, is a child’s “hyperactivity” necessarily ADHD? Does it mean that everything will be fine if we leave it to the doctor? First of all, we must first understand what is ADHD? ADHD is the most common developmental behavior disorder in school-aged children and adolescents, affecting their cognitive, behavioral, emotional, social and developmental functioning. The general prevalence rate is 3-5%, while 30% of children with ADHD have learning problems, and some children have major symptoms that last into adolescence or adulthood, seriously affecting the child’s work and life as an adult. In fact, not all children have symptoms of hyperactivity, as the name “ADHD” suggests, but there are other symptoms and a mixture of symptoms. The main symptoms are: 1. Difficulty in concentration Difficulty in concentration is the core symptom of these children. They may be inattentive in the classroom, have short attention spans, be easily attracted to irrelevant stimuli or daydream, answer questions, lose track of things, procrastinate on homework, seem inattentive even when playing games, and have wandering eyes when talking to others. The result is that they cannot learn effectively. 2. Excessive activity and impulsivity The most prominent feature of ADHD is excessive activity incompatible with age. These children have been active and restless since childhood, and when they were young, they showed a lot of energy and kept running and moving around. When they go to school, they have trouble sitting in class, moving their bodies around in their chairs, or in severe cases, leaving their seats without permission and walking around the classroom. He or she may talk to classmates, push others, make trouble or do various strange things. Most children with ADHD have normal or near normal intelligence. The neuropsychological test shows that there is an impairment in attention, memory, visual-motor and generalized reasoning ability. Current medication for ADHD can improve the child’s attention to some extent, but it usually does not solve the child’s learning difficulties, behavioral deviations, and interpersonal maladjustment. Experts suggest that while children with ADHD receive medication, doctors, parents and teachers should work together to tailor individualized treatment plans for children with ADHD and provide intervention and guidance for the child’s “target behaviors. Therefore, it is not enough to rely on doctors alone, but it is necessary for schools, families and hospitals to work together to effectively improve the abnormal behavior of children with ADHD, help children improve their social skills and self-control, and increase the cure rate.