Patient: What are the causes of increased salivary secretion in the oral cavity of adults? Doctor: Saliva is mainly secreted by three major glands: parotid gland, submaxillary gland and sublingual gland, the common abnormal performance is insufficient secretion of saliva in the oral cavity of adults, the increase of saliva secretion in the oral cavity is mainly caused by the gland secretion function, no special treatment is needed, if it is excessive saliva secretion that causes communication disorders (for example, some patients are teachers by profession and need to pay attention to the image when lecturing), you can take a small amount of gland secretion inhibiting The specific use of drugs, such as atropine, need to go to the hospital to consult a professional physician, not blindly use.