Objective To find out the problems in Preschool Children's Language Barrier Rating Scale made by Taiwanese professor LIN Bao-gui and to provid the basis for users by analyzing the application of the scale among preschool children with language barriers in the Mainland. Method Mean values,standard deviation of all age groups,difficulty level and appraisal ability of tested questions,reliability and validity were analyzed by testing 95 preschool children in the Mainland aged from 3 to 5 years old. Results Although Preschool Children's Language Barrier Rating Scale had a good internal consistency,mean values in each age group were significantly higher than norms of Taiwanese children.Moreover,difficulty level and appraisal ability of tests were insufficient for children aged from 4 to 5 years old. Conclusions Preschool Children's Language Barrier Rating Scale is excellent for evaluation of preschool children's language barrier.However,due to cultural differences and other factors in the Mailand and Taiwan,it can not be directly used in clinical diagnosis of children's language barrier.The tests and norms are suggested to further revise.