Abstract: Objective　To establish a language development norms for children aged 1-6 years in Jiangsu city. Methods The self-made Language Development Scale for Children Aged 1-6 was standardized, including scale score norm and percentile norm. Results　A total of 1093 children (553 males and 540 females) aged from 1 year 6 months to 6 years 9 months were included from four cities in Jiangsu Province. The scale has good reliability and validity. The standard score ?1.33 SD was taken as the threshold point, and any value below this value was considered as the language delay. The sensitivity and specificity of diagnosing language delay were 97.44% and 78.21%, respectively. Conclusion　The norm sample of the Language Development Scale for Children Aged 1-6 is representative, and the statistical indicators of the scale meet the requirements of psychometrics. It has high clinical value in the language assessment of children aged 1-6 years in Jiangsu city.Key words: children language norm sensitivity specificity reliability validity

Key words: language norm; sensitivity; specificity; child