Abstract: Objective To investigate the snoring status and daytime behavior patterns of children aged 2 to 6 years in Zhongshan City，and analyze the correlation between snoring frequency and daytime behavior.Methods From March 2018 to February 2019，1 880 children from 6 kindergartens in 5 districts of Zhongshan were selected by a stratified cluster random sampling method to conduct a questionnaire survey. The questionnaire was based on the clinical questionnaire of the Sleep Disorders Scale for Children from Sydney，Australia，and customized according to the situation in China.Totally 1 802 valid questionnaires were recovered.Results The odds for children in the snoring group developing daytime behavioral symptoms were 1.51 times that of the children in the non-snoring group；when the frequency of snoring was less than three times per week，children with higher severity of snoring showed a higher incidence of daytime behavioral symptoms；children in the snoring group had higher frequency in daytime sleepiness，lower inattention，hyperactivity and incompatibility than non-snoring group；children with insufficient total sleep time per day，difficulty falling asleep，and supine position had a higher incidence of daytime behavioral symptoms. Conclusion Compared with non-snoring children，children with snoring have an increased risk of daytime behavior problems. Early intervention and treatment of children with snoring should be advocated.

Key words:

Snoring, Daytime behavior, Children