Saliva is the common name of salivary glands, the main function is lubrication, digestion, cleaning, increased saliva non-stop spitting, generally and improper diet or various factors to stimulate the salivary glands to secrete more saliva has a relationship, excluding pathological factors is the psychogenic factors. When this happens, you can improve by drinking a small amount of water, saline gargle, and eating less greasy food and sweets. If you keep spitting for a long time, you need to consider some diseases, such as spleen deficiency, indigestion, inflammatory diseases of the oropharynx, etc. You need to go to the hospital in time.