Biting the lips in infancy is an instinctive sucking activity, in infancy and early childhood may stem from psychological factors or requirements are not satisfied, psychological relief methods, so if parents find that the child biting the lips, is a bad habit, need to be from the family relationship as well as the child’s growth environment, to observe whether the child’s management and care is not in place, be sure to remove the child’s psychological barriers. If found after biting the lip, do not be anxious, must be followed to induce the child, must tell him in time, know what role of the teeth and lips on people, what is the harm of biting the lip, and then gradually to guide, with the help of bad habits, for the older children can also be induced. If in adolescence is really not corrected, orthodontic intervention can be carried out to prevent the existence of long-term lip biting bad habits, because lip biting can lead to the oral cavity, jaw, teeth, the occlusal relationship is bad, so quit or must be concerned about, to prevent the long-term existence of bad habits of lip biting.