Abstract: Introduces the basic principle of CORDIC algorithm, and analyses the calculation method of CORDIC algorithm.For use of CORDIC streamline realize FFT wing operation cost more resources problems, according to CORDIC iterative method of calculating coefficient to improve CORDIC pipeline structure form, in order to accommodate FFT algorithm.Choose ALTERA company Cyclone Ⅱ series of EP2C35F672C6 to realize the whole FFT processor.And timing simulation and hardware emulation are designed.Through comparing the both, the calculation results are basically the same.