Under normal circumstances, the baby’s teeth erupt between 4-12 months. During the teething period, the baby will have some abnormal performance, different babies behave differently, mainly the following symptoms: 1, gum changes: the baby’s gum area will be red and swollen, suspected to be a small part of the higher, after which small white spots will appear in the teething area, and then the teeth can slowly grow out; 2, gnawing things: due to the eruption of teeth, the gum area will have an itchy feeling, at this time the baby may feel uncomfortable gums, will use fingers Gum, and also gnaw on some surrounding objects, such as toys that can be touched, the crib fence and other items; 3, mood changes: the baby will also be irritable because of the itchy feeling, manifested as increased crying and sleep; 4, drooling: due to the stimulation of teething, will induce increased saliva secretion, infants and toddlers will not consciously swallow saliva, will show a lot of saliva, drooling phenomenon. In addition, some babies may appear to refuse to eat, probably due to poor oral cleaning, resulting in the accumulation of some food residues in the teething area, there will be local redness and swelling. At this time, as long as attention is paid to timely cleaning of the teeth, the inflammation will soon subside.