Follicles on the palate can be caused by food factors, bacterial infections, viral infections and other factors. 1. Food factors: consuming too hot food or hard food during meals, which causes irritation to the palate, can cause blistering of the palate, which may be accompanied by pain or even bleeding. 2. Bacterial infection: For example, apical infection, not timely treatment, bacterial infection continues to aggravate, can lead to blistering of the palate, the bubble contains pus. 3. Viral infections: Herpes simplex virus infections are common, and when they affect the palate, they can cause herpes to appear on the palate, which may be accompanied by tingling, fever and other symptoms. The presence of follicles on the palate and other abnormal manifestations should be alerted to disease factors, it is recommended that timely medical examination and treatment, do not take medication, in order to avoid the danger.