As the early diagnosis and intervention of motor skill disorder for children is very important, it gets more and more attention in medicine, education and psychology. The author describes the research status of motor skill disorder after introducing the definition and evolution of the terminology. Based on this, the paper analyses the limitation of existing diagnosis tool such as excessive specialty, excessive testing time and overlook of differences between Chinese and foreign. At last, the author develops the scale of motor skill disorder for children and tests the reliability and validity by SPSS.