According to the distortion of fisheye lens which caused by wide field, correction for its video should be used. The Chebyshev interpolation method for fisheye lens is taken for transforming nonlinear correcting function to polynomial correcting function, and the pipelining fast calculating method is used for calculating polynomial function, and experimental verification is carried out. The results show that this method can implement real-time correction for fisheye images based on FPGA (field programmable gate array) with its effect is obvious and its real-time performance is excellent.