Parents can determine initially that their babies are teething by their clinical symptoms, such as drooling and gnawing, and thus appear to be crying. Teething is a basic physiological function, and there is a certain regularity in the order and timing of a baby’s teething. When the baby is teething, due to the eruption of teeth will stimulate the local nerve endings of the gums, resulting in increased salivary secretion, the baby can appear to drool. Some babies in the process of teething, due to itchy gums, can be manifested as gnawing their hands, biting the nipple, biting the pacifier and so on. As the baby’s language system is not yet perfect, in the process of teething will not speak, so if the baby is not adapted to teething can appear to cry. Under normal circumstances, parents will reach into the baby’s mouth to touch the root of the long teeth, you can clearly feel the teeth eruption. If the baby is not accompanied by obvious mental anomalies, basically can be judged as teething due to crying. Once the baby appeared to cry, accompanied by fever, diarrhea and other symptoms, parents need to bring the child to the regular hospital.