Xiao He's mother took her children to find Director Zheng. After seeing the illness, Director Zheng suggested timely operation, so that there would be no pain. The operation lasted about 20 minutes, and the preauricular fistula was completely solved. The child was admitted to the hospital in time, the operation was smooth and the incision was small. After three days in hospital, he was discharged. I came to check it several times, and there was no problem. The child's mother said: It is wise to choose Zheng Ligang, director of the Department of Otolaryngology, to perform preauricular fistula surgery during the infection period, which saves us a lot of time and the child has no pain in the whole process. Like other doctors said, first cut open and drain pus, change the dressing for 7- 14 days every day, and then wait for a month before being hospitalized for surgery. You may have to resign.