Abstract: Objective The reliability and validity of the Chinese version of the little Developmental Coordination Disorder Questionnaire (little DCDQ) was evaluated to lay a foundation for the early screening and intervention of developmental coordination disorder (DCD) in China. Methods A total of 51110 preschoolers were included in the study. Cronbach’s alpha coefficient was used to evaluate the internal consistency of the questionnaire. The Guttman split-half coefficient replaced instead of test-retest reliability and was used to assess the scale’s stability. The exploratory factor analysis was used to examine the construct validity of the Little DCDQ. Exploratory factor analysis was performed to examine the structural validity of the little DCDQ, and the Age and Stage Questionnaire, Third Edition (ASQ- 3 ) was used as the standard scale to analyze the validity coefficient. Results? Chinese version little DCDQ has high internal consistency (Cronbach’s alpha coefficients of all items were > 0 . 9 ). The Guttman coefficient was 0 . 934 , indicating good split-half reliability. Three factors, “fine motor”, “motion control” and “general coordination”, were extracted by exploratory factor analysis, and contributing rate of cumulative sums of squares was 68 . 290 %. Most of the item factor loads were basically above 0 . 6 , indicating that little DCDQ had a reasonable structural validity. Little DCDQ scores were correlated with various ASQ- 3 dimensions (communication, gross motor, fine motor, problem solving and individual-society). Conclusions The Chinese version of the little DCDQ applied well in younger preschoolers. It could be used in epidemiological study of DCD and as screening tools in child health care department of primary hospitals.

Key words: developmental coordination disorder; little DCDQ; reliability and validity; China