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In order to satisfy the request for dealing with Binocular visional signal which needs fast and real-time processing, the design of multi-DSP parallel system based on four ADSP-TS201Ss is proposed. Proceeding from practical requests, a scheme of the multi-DSP parallel processing system which couples the external bus sharing and the link ports is adopted by analyzing the parallel processing structures of three kinds of ADSP-TS201Ss. This scheme has ensured the data rate, resources sharing, simple structure, easy controlling, and flexible communication. This study designed the system hardware and the software to describe the data exchange between four ADSP-TS201S, which ensured the requirement of binocular vision system of processing mass operation in real-time environment.