Teething babies may have symptoms such as drooling, gnawing, and mood changes. 1. Drooling: baby in teething, because teething stimulation easily induced by increased salivary secretion, and infants and young children’s mouth is relatively shallow, but also does not have a good ability to swallow saliva, it will lead to excessive drooling phenomenon. 2. Gnawing: when the baby is growing teeth, the gums may have symptoms of discomfort, such as itching, swelling and pain, etc., the baby feels uncomfortable gums, often through gnawing things to relieve symptoms. 3. Mood changes: babies in teething due to uncomfortable gums, often lead to a more irritable mood, and often expressed through crying. Teething babies may also have other symptoms, usually should pay attention to oral hygiene. If the baby persistent crying and can not be soothed or depressed need to be alert to the possibility of disease, it is recommended to go to the pediatric outpatient clinic in a timely manner, in accordance with the doctor’s instructions to deal with.