The rebellious period of a 3-year-old child is usually not really rebellious, and the duration is mainly related to the attitude and education of the parents. The most common rebellious behavior of 3-year-olds is usually self-centeredness, feeling that everything is their own and not liking to share with other children. The duration of rebellion is mainly related to the parents’ attitude. If parents are loving, patient and accepting, and give their children the right guidance and communication, and teach them to learn to share, they can improve their children’s self-centered habits and make the rebellion disappear quickly in a short period of time. If parents use violence to force their children to follow their parents’ opinions and do not support their children’s actions, often with a negative attitude, the child may become more rebellious and continue to be rebellious into adulthood or beyond. Therefore, parents should take the opportunity to guide their 3-year-old children after their rebellious behavior, cultivate good interest, establish the right concept, enter the child’s heart, and accompany them through the rebellious period smoothly.