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In order to effectively control the image residual value of UAV remote sensing image and improve the detection accuracy level of multi-source remote sensing image change characteristics, a multi-source remote sensing image change detection parallel system based on UAV tilt photography technology is designed. In the C/S framework system, the parallel operation circuit, pixel detection host, HBase storage structure and remote sensing image display are set up to complete the hardware design of the multi-source remote sensing image change detection parallel system. According to the numerical level of the joint adjustment index, the density index is calculated, and the known image data are combined to solve the texture mapping conditions in the process of UAV tilt photography, so as to realize the modeling and processing of multi-source remote sensing images. According to the image feature extraction results, improve the configuration mode of image detection pyramid, match the UAV digital image with the parallel detection node, and then complete the design of multi-source remote sensing image change detection parallel system based on UAV tilt photography technology in combination with the hardware application structure at all levels. The experimental results show that under the action of UAV tilt photography technology, the image residual indexes of remote sensing images in the x-axis, Y-axis and z-axis directions are significantly reduced, which can effectively improve the detection accuracy of change characteristics of multi-source remote sensing images.