Smoking drooling is generally caused by endocrine disorders, immune system disorders and other reasons. 1. Endocrine disorders: the endocrine system cooperates with various biochemical enzymes to maintain the relative stability of the environment within the body, endocrine disorders, there will be a variety of night drooling and other related symptoms, patients with endocrine disorders may be caused by environmental factors, physiological factors, emotional factors, nutritional factors and other factors. 2. Immune system disorders: immune system disorders are autoimmune diseases such as systemic lupus erythematosus and dry syndrome, which are generally caused by the patients’ long-term irregularities in life and work. 3. Inflammation of the throat: Inflammation of the throat is a variety of microbial infections of the pharynx and inflammation, patients usually appear pharyngeal dryness and congestion, burning, swelling and pain, pain in swallowing, mucous phlegm and other symptoms, smoking caused by smoking saliva. Patients who smoke and drool a lot may also be neurological disorders and other causes, patients should go to the hospital, under the guidance of the doctor reasonable treatment. In addition, from the health point of view, it is recommended to quit smoking as soon as possible.