Saliva, also known as saliva, has some antibacterial and antiseptic effects, but the effects are mild and should not be used as a substitute for normal disinfectant. First of all, saliva is a digestive fluid, most of which is water, but also mucin, salivary amylase, lysozyme and other components. Among them, amylase can promote the decomposition of starch into maltose and enhance digestion, and lysozyme has a certain bactericidal effect, but because the content is low, so the bactericidal effect is extremely limited. When the body has a wound or skin infection, it is still recommended that regular antibacterial drugs should be used to disinfect the wound or the infected area.