Abstract:Objective To explore the factors associated with fever after tonsillectomy and/or adenoidectomy in children, and to provide reference for surgical treatment and nursing. Methods Collecting information on 408 cases of children with obstructive sleep disorder breathing(OSDB) who required tonsillectomy and/or adenoidectomy due to tonsil and/or adenoid hypertrophy. It was analyzed for the relationship between fever and intraoperative bleeding, sex, tonsil size, adenoid size, history of tonsillitis, current situation of sinusitis, surgical time, surgical season and surgical site. Results There were 19 cases of the 408 children with fever after tonsillectomy and/or adenoidectomy, their body temperature is above 38 degrees Celsius. There was statically difference between in the rate of postoperative fever and in different seasons (P<0.05). There was no significant difference in the fever rate among patients with different intraoperative bleeding, gender, adenoid size of tonsil, history of tonsillitis, current situation of sinusitis, operation time and operation site (P>0.05). At the same time, it was found that the fever rate increased with the volume of tonsils and adenoids. Conclusions Children who undercarried tonsillectomy and/or adenoidectomy had a higher probability of developing fever in the spring than that in other seasons. The fever rate has a tendency to increase with the volume of tonsils and/or adenoids.