For 2-3 year olds, their language skills are still developing, and they are also experiencing a period of rebellion. In some cases, children with limited expressive skills will use their behavior to express themselves. Parents should consider many aspects of the problem, and should not punish their children in a violent way. First of all, parents should first look at their own family environment, whether we adults will use such a way to children or others. Secondly, whether the children playing together will often appear to hit the phenomenon. Because children are very strong imitation ability, sometimes also learn the plot of the film and television, cartoons, etc., so, first filter from the side of whether there are some influential factors exist, and then targeted to make adjustments and changes. When parents find this behavior, first understand the process, it is best to have some patience and listen to what the child has to say, and then explain to the child how to respond, what can be done and what can not be done. If there is an older person helping with the child, the same response should be consistent and not coddle the child to encourage similar behavior. Parents should not be too impatient, but should instead be more guided by daily life, such as polite speech, good living habits, etc.