There are several possible causes of white particles on the tongue: first, fungal infection in the mouth caused by Candida albicans, mostly in people who take antibiotics for a long time, frail elderly people and children, related to low immunity, the main symptom is the appearance of white particles on the tongue, the symptoms of serious white particles connected into pieces to form a white pseudomembrane. Second, the surface of the tongue suffers from tongue mucosal ulcers. The early symptoms of ulcers are the appearance of white spots in the middle of the red, swollen and congested tongue mucosa, followed by ulceration of the mucosa centered on the white spots. Thirdly, there are lichen planus and leukoplakia of the tongue mucosa, both of which are also related to immune disorders. The main symptom is the appearance of white reticulation or wrinkled paper-like plaques on the surface of the tongue mucosa. Fourth, many people due to poor oral hygiene or like to eat spicy, greasy food will lead to an increase in tongue moss on the tongue, and a layer of white thick tongue moss on the surface of the tongue.