The following situations are common in children who are particularly stubborn: 1. Influenced by the family environment, adults in the family often quarrel or capricious, angry phenomenon, long time in this environment, teach by example, learn by ear, the child will imitate the adults to appear similar behaviors. 2. Sensory integration disorders, when sensory integration disorders can not be correctly processed signals collected by the senses, thus appearing emotionally unstable, willful, you can go to the hospital for sensory integration test, if necessary, to give professional training. 3. You can go to the hospital for sensory integration test, and if necessary, give professional training. 3, is a normal phenomenon, mostly seen at the age of 3-5 years old or puberty, the gradual establishment and enhancement of self-consciousness parents need to communicate with their children, communication, if necessary, you can find a psychologist to give the right guidance.