Five-month-old baby drooling, may be a normal phenomenon in the growth process, can disappear with growth; may also be caused by ulcers or herpes in the baby’s mouth, need timely treatment. Common causes and treatment 1, physiological factors: in most cases, the baby drooling is a normal phenomenon. Because the baby to three or four months old when the salivary glands are gradually developed and mature, the secretion of saliva increased, but because the function of swallowing is not perfect, will not regulate the excess saliva in the mouth, it will often drool. And teething, biting hands and other habits, will also increase drooling. This phenomenon will disappear quickly with the baby’s growth and development, as long as good care will not be too worried. Parents are advised to keep the baby’s mouth clean, wipe off the saliva in a timely manner, and wash the mouth with warm water; 2, disease factors: when the baby suffers from certain oral diseases, such as ulcers, herpes, etc., or the presence of pharyngitis, hand, foot and mouth disease, candida infection and other throat diseases, the baby will feel painful swallowing saliva, so it is more often manifested as drooling. If this happens to a baby who normally does not drool much, the above diseases can be highly suspected. At this time, you need to pay attention to the diet, you can eat more liquid, light food, eat more vegetables and fruits to supplement vitamins and minerals. In addition, the more serious symptoms can go to the hospital to improve the examination, for different causes to choose the appropriate method of treatment. Note parents should actively identify the cause of drooling at the same time, should promptly replace the baby’s bib and drool bib to avoid saliva impregnation for a long time to hurt the skin.