Objective To test the ability of the face recognition of children with autism spectrum disorder (ASD) disorder,attention-deficit/hyperactivity disorder (ADHD) children and normal children.To explore the characteristics of facial expression recognition disorder in ASD children. Methods Totally 32 children with ASD,32 children with ADHD and 32 normal children were matched at the age of development.They were tested with the emotional expressions recognition software system developed in this research with took the response time and the correct rate were taken as the analysis indexes. Results 1) There was no significant difference in the response time of gaze between the Sadism and ADHD group,while happy and angry were tested (t=1.04,0.16,P>0.05).The ASD group showed significant difference in sadness,surprise and fear (t=1.83,1.79,2.96,P<0.05) with ADHD group.The average duration of attention was significantly shorter in ASD group and ADHD group than in normal group (P<0.05).2)There were no significant differences in the recognition rate of happiness,angry between ASD group and normal group (χ²=0.318,0.067,P>0.05 ).The recognition rates of sadness,surprise and fear in ASD group were lower than those in normal group(χ²=0.428,8.532,5.455,P<0.05);ADHD group had lower recognition rate of fear than normal group(χ²=5.406,P<0.05);Other kinds of emotion recognition rate of ADHD was no significant difference with the normal group (P>0.05). Conclusion ASD children face recognition disorder is not only due to reduced visual attention;ASD children with emotional disorders mainly reflected in the sadness,surprise,fear of emotion recognition.Recognition rate of happiness,and angry is relatively high.