Our study had some limitations. First, our sample in this study was small. Hence, we did not group the subjects according to their cognitive ability. It was worth exploring whether the research results are generalized to large sample after grouping the children according to their intelligence level. Second, in this study, only a small number of female subjects were included in the ASD group. It is undeniable that sexual dimorphism in autism is an important factor that should be considered, although there is no difference between the two groups on sex. In future research, we will further explore whether the EEG coherence of children with ASD of different genders will show different characteristics. Third, we use the analysis software of BP company in Germany for data processing in this study. In the future research, we will use more sophisticated analysis software, such as MATLAB software package for more in‐depth analysis.
