Abstract: In order to realize the real time evaluation of atmospheric turbulence parameters, a real time measurement platform for adaptive optics (AO) system based on FPGA and DSP, which consisted of a front -end FPGA module and a back -end DSP module, was proposed and built. As the processor of front -end module, a FPGA was used to reconstruct the open -loop Zernike coefficients quickly from closed -loop data with the multi -channel parallel architecture and the pipelining operation. With the characteristic of flexible program, a DSP was used to calculate the back-end complex statistical values for the coherence length r0, the outer scale L0, the wind speed v and the coherence time t0. This proposed platform was applied to the 127 -element AO system for the measurements of atmospheric turbulence parameters based on the observations of stellar stars.