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How to find an implementation for a shorter period and lower cost of image data acquisition method in industrial applications were studied. By analyzing the Ethernet frame format and JPEG image data characteristics, given a JPEG image frames of fragmentation and the fragmentation data encapsulation method, on this basis to realize the data acquisition method based on the packet of image data encapsulation. Finally the design was implemented in the FPGA environment, and this implementation was successfully applied to the project. Practice shows that the proposed method can achieve stability and real-time JPEG image data acquisition without adding external memory devices and other complex devices.