Image enhancement software is very important in the post-processing of UAV aerial image. To realize the aerial image enhancement software, the general structure of the software is designed firstly. Then the theories of the primary image processing algorithms in the software are analyzed, such as the adaptive median filtering, the edge detection algorithm and the SPIHT algorithm. At last, using VC++ 6.0 and Matlab, the software is carried out. At the same time, the effect of the aerial image by the primary image processing algorithms is analyzed. The results indicate that the effect can satisfy the requirement well.