After 2 years old baby drooling, need to dry saliva, in addition to keep the local clean, dry, so as not to cause irritation to the skin. Most consider with baby teething, oral diseases, tongue inflammation, pharyngitis, tonsillitis and other related, need to go to the hospital for examination, clear reasons. 1, shallow mouth: some babies develop slowly, two years old shallow mouth, can not swallow too much saliva well, easy to make drool outflow, this is a normal physiological phenomenon, no special treatment. With the growth of age, oral depth increases, swallowing ability to strengthen, drooling phenomenon will slowly reduce; 2, teething: 2 years old baby during the eruption of teeth, gums are stimulated to promote saliva secretion, so that saliva increases, coupled with the baby’s shallow mouth, swallowing function is insufficient, so saliva is easy to flow. Belong to the normal physiological phenomenon, with the growth of age, drooling phenomenon will gradually reduce; 3, thrush, oral ulcers: 2 years old baby in addition to drooling, there are also abnormalities at the oral mucosa, such as oral mucosa surface with white patches of film or ulcers. Need to go to the hospital in a timely manner, according to medical advice to rub ice boron oil, mycobacterial suspension and other drugs, at the same time need to supplement the appropriate amount of vitamin B2 and vitamin C; 4, tongue inflammation, pharyngitis, tonsillitis: such diseases can stimulate salivary gland secretion, so that the two-year-old baby drooling increased. Need to actively address the cause of treatment, tongue infection is caused by Candida, oral fluconazole, itraconazole and other drugs. Acute pharyngitis can be treated with antibiotics, such as penicillin, and chronic pharyngitis can be treated with compound borax solution, furacilin solution gargle. Tonsillitis can follow medical advice to take antibiotics, such as penicillin, if the indications for surgery can be surgically removed; 5, other: 2 years old baby if persistent drooling, and even appear language, intellectual development backward situation, should be alert to the central nervous system diseases, timely medical examination.