A new large format focal-plane shutter with high frame frequency is designed to the space camera with a transmission optical system and a focal length of 1 000 mm. The focal plane shutter adopts a single curtain with multiple slits in structure, and two shutters are orthogonal layout and are driven synchronously by a motor with gears. The design allows to exposure of two stitched area CCD simultaneously. A Digital Signal Processor (DSP) is used to control the motor velocity according to the curtain encoder, so as to ensure the exposure uniformity of the CCD. The experiment results show that this new shutter has a higher stability of movement, a long life span more than 2×105 operating times, a wide range of exposure time in 1/ 200 s to 1/ 1 000 s and a exposure error within 8%.Moreover, the max frame frequency can be 4 frame/s. The performance of this shutter is fully satisfied with the requirements of area scan CCD aerial cameras.