Drooling disorder, also known as salivary overflow disorder, salivary hypersalivation disorder, salivary hypersalivation disorder, etc. According to its etiology, it can be divided into primary and secondary: patients with primary salivation disorder have no obvious causative factors and simply show increased salivation; secondary salivation disorder has clear etiology, such as cerebral palsy, intellectual developmental disorders and other reasons leading to dysfunction of the mouth, pharynx and facial muscles and swallowing disorders causing salivation. The clinical manifestations of salivation include: involuntary saliva flowing out from the corners of the mouth, saliva splashing when speaking, frequent swallowing or vomiting, which seriously affects life, work and social life and leads to depression and low self-esteem. At present, surgery is the main effective method to treat salivation, and there are mainly the following surgical methods: (1) Removal of submandibular gland or parotid gland with large salivary secretion can achieve better results, but this method will leave scars in the maxillofacial area, and at the same time, it is easy to damage the facial nerve and lead to facial paralysis; (2) Ligation of the ducts of submandibular gland and parotid gland, or the ducts of submandibular gland or parotid gland are moved backward and rerouted, which has better results for secondary salivation (3) Cutting the parasympathetic nerve fibers of the submandibular ganglion (sublingual gland can also be removed at the same time) for the treatment of drooling is a new method for the treatment of drooling in recent years, which has stable efficacy, fewer complications and is safer than the aforementioned methods, while leaving no scars and depressed deformities in the maxillofacial area.