A method for achieving China Mobile Multimedia Broadcasting, CMMB, diversity reception, comprising: Acquiring respective Analogue-to-Digital Converter, ADC, data of two antennas; respectively conducting a synchronization and Fast Fourier Transform, FFT, operation on the ADC data of the two antennas to acquire delay information about the two antennas, and selecting a signal to noise ratio, SNR, configuration parameter according to an operation result; according to the delay information, conducting delay compensation on the operated data; and according to the selected SNR configuration parameter, merging the data of the two antennas on which the delay compensation is conducted, and outputting the merged data; wherein the step of selecting a SNR configuration parameter according to an operation result comprises: conducting a masking process on unnecessary direct current subcarriers according to subcarriers acquired after the FFT operation is conducted; multiplying the data on which the masking process is conducted with a synchronous serial number and then conducting a saturation and normalization process on the data; and accumulating power values of the 256th-767th subcarriers from a position of a first path of the fine synchronization, and reporting the accumulated power values to the CPU so that the CUP calculates a noise power and selects the SNR configuration parameter. Acquiring respective Analogue-to-Digital Converter, ADC, data of two antennas; respectively conducting a synchronization and Fast Fourier Transform, FFT, operation on the ADC data of the two antennas to acquire delay information about the two antennas, and selecting a signal to noise ratio, SNR, configuration parameter according to an operation result; according to the delay information, conducting delay compensation on the operated data; and according to the selected SNR configuration parameter, merging the data of the two antennas on which the delay compensation is conducted, and outputting the merged data; wherein the step of selecting a SNR configuration parameter according to an operation result comprises: conducting a masking process on unnecessary direct current subcarriers according to subcarriers acquired after the FFT operation is conducted; multiplying the data on which the masking process is conducted with a synchronous serial number and then conducting a saturation and normalization process on the data; and accumulating power values of the 256th-767th subcarriers from a position of a first path of the fine synchronization, and reporting the accumulated power values to the CPU so that the CUP calculates a noise power and selects the SNR configuration parameter. conducting a masking process on unnecessary direct current subcarriers according to subcarriers acquired after the FFT operation is conducted; multiplying the data on which the masking process is conducted with a synchronous serial number and then conducting a saturation and normalization process on the data; and accumulating power values of the 256th-767th subcarriers from a position of a first path of the fine synchronization, and reporting the accumulated power values to the CPU so that the CUP calculates a noise power and selects the SNR configuration parameter.