Inflammation of tonsils can be caused by bacterial infection or viral infection, which can be clearly diagnosed by routine blood test and bacterial culture of secretion. 1. Routine blood test: If it is bacterial infection, routine blood test will find that the total number of white blood cells is elevated and neutrophils are increased; if it is viral infection, routine blood test will find that the total number of white blood cells is normal or slightly elevated, and the number of lymphocytes is elevated, and so on. 2. secretion examination: bacterial infection caused by tonsillitis, secretion test will find the presence of pathogenic bacteria, while viral infection caused by tonsillitis, secretion can find the presence of viruses. Tonsillitis should be combined with clinical symptoms and corresponding auxiliary examination to identify the causative organisms, and follow the doctor’s instructions to take appropriate treatment measures.