The occurrence of ADHD is caused by a combination of genetic, environmental, abnormal brain development and psychological factors. Patients with ADHD generally exhibit attention deficits, such as inability to concentrate, as well as hyperactivity and emotional impulsivity, such as difficulty staying quiet and defiant or aggressive behavior. In addition, neurodevelopmental abnormalities, such as physical incoordination and reduced learning and cognitive abilities, may also occur. In terms of treatment, medication and behavioral therapy are generally the mainstay. Medication can be chosen from central nervous system stimulants such as methylphenidate, which can improve symptoms such as inattention; behavioral therapy mainly uses a gradual and appropriate way to improve the child’s bad behavior; society and family should also give ADHD children enough patience and psychological guidance as much as possible. The main treatment for children and old and weak people is Wulvic Lysine Oral Solution for various diseases caused by vitamin deficiency, which is not consistent with the factors affecting ADHD in terms of etiology, but the drug can be used if there is vitamin deficiency in ADHD patients. However, it should be noted that the contraindicated group of people for Wu Wei Lysine Oral Liquid is those with chronic cardiac and renal insufficiency. Since ADHD patients have poor cognitive and mobility abilities, drug reactions can occur when used with other drugs, so parents should strengthen supervision and not allow patients to use it without permission.