In our study, we explore the relationship between aberrant coherence at different frequency bands and the AQ and ADI‐R scores of the children with ASD. The results showed significant positive correlations between the increased coherence in O1‐O2 electrode pair and total scores of AQ in theta, alpha, and beta bands. In beta band, the coherence of T8‐P8, F3‐O1, and F7‐F8 were positively correlated with the detail attention scores of AQ. And ASD group had positive correlation between the coherence of O1‐O2 and F7‐F8 and communication skills of AQ. In addition, the coherence of O1‐O2 in theta and alpha bands and F3‐F4 in beta band was positively correlated with the early developmental abnormality of ADI‐R (Tables 4 and 5).