Children’s perceptual deficits cause them to deviate from the perception and experience of things, thus becoming psychologically abnormal, weak-willed, and with fluctuating personalities. Children with ADHD tend to be withdrawn, capricious, and have poor self-control. Attentional characteristics: The process of attentional activity is divided into three parts: selection, maintenance and transfer of attention. The intensity, stability and scope of attention reflect the degree of designation and concentration of mental activity on a certain object, while the process of attention activity in children with ADHD is often impaired, with inability to pay high attention, short attention span, unstable attention, narrow and easily distracted scope, and poor distribution of attention, which are its main characteristics. Poor selectivity of attention: Attention is divided into unintentional and intentional attention. Children with ADHD have a predominance of unintentional attention, easily responding to changes in their surroundings and new stimuli that appear, but not seeing things that they should pay attention to intentionally. When they do homework at home, they always listen to adult conversations and noises outside the window; on the way to school, they are also attracted by the toys in the store and forget to go to school. Their attention is unconscious and aimless, and they look at and do whatever they see, not knowing to discern whether they should do it or not. Attention is difficult to maintain: attention is not highly focused and is held for short periods of time. When children go to school, learning is a long-lasting and hard work for them, and it is not possible without interest. Paying attention in class and completing homework on time is a must, which requires a high level of concentration and cannot be as playful as in the past. However, children with ADHD have poor initiative and self-consciousness in learning. They are constantly making small movements in class and have to have their parents supervise their homework. At the same time, their attention span is difficult to sustain. While it is not difficult for students aged 10-12 to maintain 40 minutes of continuous learning, it is difficult for children with ADHD to do so. Poor transferability of attention: Children with ADHD have a narrower attention span, master significantly less than the average child, and have poor attention stability and difficulty maintaining attention; they cannot master and understand the entire content of a text, and their academic performance fluctuates greatly. This reflects their lack of breadth of attention and unstable attention span, and is not due to low intelligence. Similarly, they have poor coordination, are not good at distributing their attention, and are highly distractible. To accomplish a certain task requires the eyes, ears, brain and hands to control and cooperate with each other separately, for example, in class the eyes have to look at the book and the blackboard, the ears have to listen to the lecture, and the brain has to think and take notes with their hands, at which time they will appear to be busy and confused.