Xiao Lin, male, 10 years old, has been repeatedly confronting and refusing to listen to adults’ requests, and is prone to tantrums for 2 years. Since 2 years ago, Xiao Lin often argued with adults at home over trivial matters of daily life or study problems, and was stubborn, prone to temper tantrums, and refused to listen to adults’ requests; at school, he often disturbed his classmates’ studies for no reason, and often harbored resentment after being criticized by teachers, suspecting them of protecting his classmates, complaining about them, refusing to go to school many times, and even threatening to retaliate against them. She is usually competitive and has a low tolerance for frustration; she has difficulty getting along with her family, classmates and teachers. The diagnosis of oppositional defiant disorder is considered. Oppositional defiant disorder is a developmental pattern of repeated resistance, open defiance, disobedience, and hostility to authority in children. Parents of children with oppositional defiant disorder often regulate the child’s behavior through a “rejection-compulsion” approach to education, with harsh interference, rejection, denial, and even violent scolding and physical punishment. On the other hand, parents’ overprotective and indulgent parenting style will also make children’s self-centered desires expand and their tolerance for frustration poor. Frustration-aggression theory suggests that frustration arises when purposeful behavior is blocked or forced to be interrupted, resulting in oppositional behavior. Studies have found that family factors are the most important influences on the occurrence of oppositional defiant disorder. Adverse family environment: such as many family conflicts, poor emotional communication, single-parent families, broken families, parental substance abuse or delinquency, parents with mental illness, the presence of certain personality defects, and low economic income and education, etc. Children growing up in this environment are prone to oppositional defiant disorder. Inconsistent parenting methods are an even more important influencing factor. Parents can use the following strategies to counteract this: set a standard and give praise whenever it is met; praise and reward the child for good work. Clearly establish rules for the child’s behavior at home and at school so that the child fully understands what will happen if the rules are broken. An effective punishment is to get him away from his favorite things, such as watching TV, playing games on the Internet, etc. When he gets out of control, he has to be put aside and ignored until he calms down, then talk to him about what just happened, let him tell all the upsets, and then tell him how to do it better. Let the child’s teacher or other close contacts know that the child has oppositional defiant disorder in order to get their cooperation. Have a family meeting at least once a month to discuss and assess your child’s situation. Encouraging your child to participate in more sports and recreational activities and to get enough sleep will help. In addition, adults should learn to change themselves and have strong self-control; and communicate with the psychiatrist in a timely manner.