Abstract The sandplay is usually used to understanding the persons mind and emotion through projection, but seldom using to distinguish the function of autistic spectrum disorder children. This study would explore this possibility. 152 ASD children who had received the diagnosis in hospitals involved in this research. The range of their calendar ages is 3.2 to 14-year-olds, the average of their calendar age is 8.8-year-olds. Boys are 121, girls are 31. They were divided into four groups according to their IQ from the intelligence test they received in hospitals and results of their parents’ questionnaires, play observations and sand play observations. Group1 is low functions ASD children, N=45, Group2 is middle and low functions ASD children, N=44, Group3 is middle and near to high function s ASD children, N=33, Group4 is high functions ASD children, N=30. They were asked to play freely, but the toys into the sand box just according to their thinking. All processes of ASD children playing and the productions were collected by video camera and camera. Did value for each process and production according to the criteria we completed in this research. The results showed by quantitative analysis and quality analysis. In quantitative analysis, it displayed ASD children’s function are lower, the scores of process observation and production scores are lower. Through ANOVA analysis, it was showed that the differences among four groups are signified: p<.01～p<.0001. The correlation coefficient among the scores of sandplay observations dimensions from 0.441 to 0.854, It can explain that the criteria of assessing the ASD children’s sandplay have high reliability. Through the quality analysis, it showed that the higher function of ASD children are, the longer time they played, and the productions showed the higher cognitive level. It indicated that maybe we can use the sandplay to distinguish the function of ASD children.