The panoramic imaging onboard UAV based on image mosaics or fish eye lenses has the shortages of low real-time performance or high cost.To solve the problems， we designed a UAV real-time panoramic imaging equipment.The catadioptric panoramic imaging based on parabolic reflector was used， and real-time airborne panoramic image was obtained through wireless communication， which was then changed to cylindrical panoramic image through projection transformation.Thus a real-time， large field-of-view image(360° in horizontal and 286° in vertical)was obtained.The method can improve the real-time performance large FOV imaging and decrease the cost， which lays an important foundation for further image interpretation.