The Cooperative Adaptive Cruise Control system has great benefits for traffic flow, however, the full implementation of the CACC vehicle requires a long period of time and must go through a phase of mixing CACC vehicles with manual-human vehicles. Heterogeneous traffic flows may have different characteristics than pure traffic flows. In order to analyze the characteristics of heterogeneous traffic flow and its solutions, this paper builds an automatic driving and artificial driving simulation platform, through data analysis, the impact of different lane management on heterogeneous traffic flow under different permeability of different CACC vehicles is obtain. This paper can provide theoretical basis and technical guidance for the transition from manual driving to automatic driving. keywords:CACC,Heterogeneous traffic flows,lane management，permeability

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