7-year-old children spit very often may be the emergence of oral diseases or teething causes, need to improve the relevant examination. 1. Oral disease: there may be gingivitis or periodontal disease, there may also be oral ulcers, easy to make the child’s oral secretion of saliva increased and caused by the increase in saliva, which will make the child to appear more saliva and cause the symptoms of easy drooling. 2. Teething causes: the child is 7 years old is the time to change teeth, after the teeth loose or off is likely to lead to local discomfort, caused by increased irritation, may lead to the child’s mouth with symptoms of increased drooling. However, this symptom alone is not enough to diagnose the disease, and may be caused by other factors. It is recommended that the patient consult a doctor to identify the cause and provide targeted treatment.