As the existing subcarrier modulation recognition schemes for OFDM signals is of poor performance overmultipath channels in DVB- T system,a novel recognition scheme is proposed.In this scheme,first,null subcarriersignals are recognized by the normalized power of the subcarriers.Then,pilot subcarrier signals are recognized ac-cording to the correlation coefficient of cyclic spectrum section.Finally,the modulated subcarrier signals are recog-nized with mixed high- order moment to complete the recognition of subcarrier modulation modes for OFDM signals.Simulated results show that the proposed scheme possesses not only good recognition performance but also low com-putation complexity.