Saliva is secreted by the salivary glands and plays an important role in the body’s digestion of food. There are many ways to increase saliva, you can consider chewing sugar-free gum, with the chewing of gum, the human salivary glands will then secrete more saliva. Want to increase saliva can also drink more water at ordinary times, the human body only to maintain sufficient water to make the body secrete saliva normal, and sufficient water can help the body’s metabolism will speed up. Drink more water can not only make the human body saliva secretion, but also can also play a role in cough, produce Jin, phlegm. Want to increase saliva also need to avoid the impact of certain adverse factors, such as radiation or ultraviolet light will have a certain adverse impact on the human secretion system, will also lead to abnormalities in the operation of certain functions in the human body, so avoid the harm of adverse factors, can also make the human endocrine glands secrete more saliva.