With the development of space optical technology, time delay and integration charge coupled device (TDICCD) space camera has been widely applied. TDICCD image sensor not only improves signalnoiseratio(SNR) of the optical system but also makes the optomechanical structure of the camera more compact, but the optical system distortion will affecte image quality, so the optical system design must satisfy the new demand. The optical system distortion which affects TDICCD integral is analyzed. The method of image distortion elimination of space camera optical system is researched. An optical system is designed with distortion correction lens which is characterized by the spectral band of 450~900 nm, focal length of 6000 mm, and F number of 10. The result indicates that the view field angle reaches 1.6°, optical system distortion is less than 0.01%. modulation transfer function reaches 0.50 at 50 lp/mm Nyquist frequency with 0.06 central obscure, and the quality of image reaches the diffraction limit. The designzd optical system can meet the demand for the use of high resolution space cameras, and is suitable for multispectrum, stereo imaging, and stereo mapping camera system which has little distortion.