Children with recurrent fever and mouth blisters are mostly due to symptoms of upper respiratory tract infection or pharyngitis caused by viral infection. Blood tests can be performed and analyzed by blood picture. If there are symptoms of bacterial infection, antibiotic drugs can be used for symptomatic treatment, such as cefixime granules and azithromycin syrup. Herbal soup treatment can be given through evidence-based analysis. For fever caused by wind-cold cold, add or subtract Jing Fang Da Xie Tang; for fever caused by wind-heat cold, add or subtract Yin Qiao San.