Abstract: Objective:To study the correlation between early language development and sleep in children.Methods:A total of 255 toddlers aged 12 to 30 months were chosen, who underwent physical examination in the Child Healthcare Clinicof Liuzhou Traditional Chinese Hospital from April 2019 to June 2020. Besides the physical examination, Early Language Development Progression Scale was used to evaluate the language development of the toddlers, and at the same time, the Brief Infant Sleep Questionnaire(BISQ) was adopted to collect the sleep information, and the results were statistically analyzed.Results:The evaluation of the early language development in these 255 toddlers showedthat the total development quotient was (32.04±19.09); the total development age was (13.09±9.19)months; the total sleep duration was (12.52±2.83)hours: the day sleep duration was (3.08±5.66), and the number of night wakening was (1.54±1.41); the correlation coefficient of the total development months of the Early Language Development Progression Scale and the development months and the development quotient of the subscale A with total 24h sleep duration was 0.6 to 0.8, which showed that there was a strong positive relationship. The correlation coefficient of the total development quotient of the Early Language Development Progression Scale, the development months and development quotient of subscale B and subscale C with total 24h sleep duration was 0.4 to 0.6, which showed that there was a moderate positive relationship.There was a moderate negative relationship between the evaluation results of early language development and the number of night wakening, no relationship with night sleep duration, a weak relationship with day sleep duration, and a weak negative relationship with night wakening duration.Conclusion:There is a strong positive relationship between early language development and sleep duration of the toddlers and a weak positive relationship with day sleep duration.

Key words: Language development, Sleep, Toddler