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A real-time dynamic quality data acquisition and analysis platform is developed under the frame of ARM (Advanced RISC Machines) and DSP (Digital Signal Processor) to satisfy the demand of field services of inter-enterprise quality control oriented to manufacturing process. The function analysis of field quality data is done in this paper. Data acquisition, real-time processing and display based on ARM + DSP master-slave structure are done through HPI (Host Port Interface) in this platform to improve the ability of the dynamic process adapted to the field quality data.