Tonsillitis appeared to worsen after hanging saline for four days, which may be related to the improper use of drugs and seriousness of the condition. 1. Improper use of drugs: if tonsillitis patients with insufficient medication or the use of drugs on the infected bacteria sensitivity is poor, patients can be given a sufficient amount of antibiotics under the guidance of the doctor to fight infection; or replacement of antibiotic therapy, from penicillin class replaced by cephalosporins, macrolides, such as cefuroxime, azithromycin and so on. Apply glucocorticoids, such as dexamethasone, as appropriate. 2. The condition is too serious: tonsillitis is mainly caused by type B hemolytic streptococcus, staphylococcus and other bacterial infections, the patient appeared to hang up four days of saline has not been good and aggravation of the feeling, it may be a more serious condition, the treatment course is not enough, the inflammation is not completely controlled. It is recommended that the patient consult a doctor for timely examination, if necessary, take the tonsil surface of the secretion for bacterial culture, to make clear the specific bacterial species after the drug sensitivity test, timely adjustment of drug therapy, and to observe the changes in the condition.