The invention relates to an m-ary continuous phase modulation frequency domain equalization method based on chaos interleaving, an solves the problems of high complexity and low frequency spectrum utilization rate, transmission rate and reliability in a communication system combining continuous phase modulation and frequency domain equalization in the prior art. The m-ary continuous phase modulation frequency domain equalization method based on chaos interleaving, which is disclosed by the invention, comprises the main implementing steps of: (1) symbol mapping; (2) continuous phase modulation; (3) chaos interleaving; (4) sampling; and (5) frequency domain equalization. The invention adopts a method for directly carrying out oversampling frequency domain equalization on an m-ary continuous phase modulation signal, and the method effectively eliminates multipath interference of a multipath fading channel and meanwhile, improves the frequency spectrum utilization rate and the transmission rate of the system. The invention simultaneously adopts a chaos interleaving method, and the method, by changing a sequence of a signal sample sequence, reduces correlation between signal sample points, reduces an error rate of transmitting a signal by the multipath channel and improves reliability of the system.