Results and discussions: Mild fever: 37.5%, moderate fever: 20%, high fever: 22.5%; Mild otalgia accounted for 40%, severe otalgia 25%; No ear discharge 77.5%, ear discharge accounted for 22.5%; congested tympanic membrane accounted 35%, pus-filled bulging tympanic membrane 42, 5%, perforated tympanic membrane 22, 5%.