Abstract: To attaina ground resolution of 0.2 m when flying at an altitude of 10 000 m, we designed a high-resolution CCD aerial photography lens with long focal length and catadioptric optical path. In this design, we used ordinary glass to correct the secondary spectrum from large diameter and long focal length. In the condition of the large area array, high resolution CCD as the receiver with a single pixel size of 8 m and an effective size of 36 mm48 mm, the modulation transfer function of every FOV approached to the diffraction limit at 60 lp/mm, which met the image quality requirements. Finally, it achieved the alltime observation and measurement with wide band range of 470 nm~950 nm.