Frequent drooling is caused by the weakness of the spleen and stomach, oral inflammation, improper diet, craniosynostosis, etc. Many people with weak spleen and stomach have drooling, mainly because the spleen is weak and cannot transport the nutrients in food, and the transmission of water and grain essence is affected, so it is unable to take in the saliva, and thus there is the performance of drooling. In case of oral inflammation, the presence of inflammation will also stimulate the salivary glands, so the secretion of saliva will be relatively strong, such as dental caries, gingivitis, periodontitis, etc. Some people often drool because of dietary factors, such as eating a lot of acidic substances in the diet, will lead to excessive secretion of salivary enzymes in the mouth, then there will also be drooling performance. Some people have drooling due to cranial diseases, such as acute cerebral hemorrhage, acute cerebral thrombosis, etc. These diseases will cause the nerves in the brain to be invaded during the attack, resulting in reflexive increased salivation.