Drooling in an 11-month-old baby may be normal and related to the high secretion of salivary glands, or it may be caused by the eruption of teeth. However, we also need to consider the possibility of indigestion, stomatitis and other diseases. 1. Normal: 11-month-old babies drool because the salivary gland secretion is relatively strong, so drooling is normal. In addition, some babies due to the emergence of teeth, may stimulate the gums to cause discomfort, thus the symptoms of drooling. 2. dyspepsia: due to the baby’s age, if you do not pay attention to diet may occur dyspepsia, is a manifestation of epigastric discomfort symptoms of clinical syndromes, the etiology of a variety of factors, including gastrointestinal dysfunction, visceral sensory allergies, etc., which will lead to the baby’s drooling symptoms. 3. stomatitis: stomatitis is a general term for inflammatory diseases of the oral mucosa, including infectious stomatitis, allergic stomatitis, etc., the main symptoms for the oral mucosa congestion, edema, blisters, etc., if the baby suffers from stomatitis, there will be drooling. 11 months baby drooling, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.