This paper designs a simple framework for video stitching, mainly using three fixed camera for real-time stitching; installs OpenCV base and CUDA8.0 software package in the Uuntu16.04 system; and uses the system to build video stitching frame system. It uses GPU programming technology to accelerate the most time-consuming algorithms of video stitching technology, such as feature matching, slit estimation, multi-band fusion and twist mapping. With sufficient calculation resources, CUDA is used for the online real-time video stream stitching.