Whether tonsillitis is caused by bacteria or viruses can be determined comprehensively through clinical symptoms and auxiliary examinations. 1. Clinical symptoms: Generally speaking, viral infection caused by tonsillitis, the clinical symptoms are generally more mild, patients may only have a slight sore throat, low fever and other symptoms; on the contrary, if it is caused by bacterial infection, the clinical performance will be more obvious, such as sore throat is more intense, the tonsils can be red, swollen and pus phenomenon, and there can also be a high fever phenomenon. 2. Auxiliary examination: (1) routine blood test: in routine blood test, if it is caused by bacterial infection, it can lead to the increase of leukocytes and neutrophils; and viral infection, it can lead to the obvious increase of monocytes and lymphocytes, but the leukocytes are generally normal or mildly increased. (2) Pathogen examination of pharyngeal secretion: for tonsillitis caused by bacterial infection, pathogen examination of secretion can identify specific bacterial species, such as hemolytic streptococcus, staphylococcus aureus, etc.; for viral infection, coxsackie virus, EB virus, etc. are common. Therefore, once tonsillitis occurs, you need to go to the hospital in time to improve the relevant examination, according to different causes for reasonable treatment.