The present invention relates to a DSP image matching method based on an operation resource load balance technology. A matching image and a reference image are subjected to FFT line transformation; aline transformation result is subjected to FFT column transformation to obtain a matching image FFT transformation result and a reference image FFT transformation result; the matching image FFT transformation result and the reference image FFT transformation result are subjected to complex multiplication and then IFFT transformation; and the related surface of the matching image and the referenceimage is calculated. The DSP image matching method employs the features of the EDMA and the CPU in the DSP to balance the load of the EDMA and the CPU, employs the CPU balance load to recombine the data to form a more efficient moving mode of the EDMA when the EDMA becomes the calculation resource bottleneck, optimizes the calculation time at the aspects of the algorithm structure and the calculation sequence when the CPU calculation becomes the calculation resource bottleneck, and performs fixed-point processing of the algorithm in a condition without loss of precision as much as possible.