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The turning performance of tracked vehicle is its critical evaluating index. Computer simulation study of turning performance is one of the effective means. Firstly the factors influencing the turning performance of tracked vehicle are analyzed, then the research actuality of its turning performance are summarized from the movement inter-relation of track and soil, turning resistance, simulation performance. The development in turning research of tracked vehicle is put forward from the parameter matching of hydro-mechanical differential steering system, shift schedule under turning, stationary turning performance, simulation mode, turning control theory, remote control and independent steering etc.