There are the following reasons for the appearance of white dot particles on the lips: 1, the most common reason is that the area around the lips is infected, commonly bacterial infection, the perioral area is particularly susceptible to infection with undesirable bacteria, bacterial infestation will appear when the perioral area is infected with septic bacteria, there will be white granular secretions in the septic bacteria infection, and there will also be redness, swelling, heat, pain, pressure pain and even pus and pus around the mouth and lips. 2, white spots on the mouth and lips are also related to fungal infections, when the perioral area is infected by fungi or other such as echinocandins, Candida albicans, etc., there will be granular white spots around the mouth and lips. 3, children are infected by viruses such as hand, foot and mouth disease, when there will also be white spots and granular material around the lips.