The invention proposes an intelligent vehicle traveling speed and time predication method based on a macro city traffic flow. Firstly the road and environment related variables in a driving environment are selected and quantified, secondly a GIS database of intelligent vehicle autonomous driving is established, thirdly combined with a regression analysis method, the combination rule of the key variables in the driving environment is provided, and the multiple-element linear relationship of intelligent vehicle driving speed and road design parameter, traffic condition and real-time road condition in a city traffic network is obtained, fourthly, based on the VLM model of the macro city traffic flow theory of a trapezoid density-flow basic pattern, the dynamic and stable characteristics of the VLM model of a road are obtained, and the speed and time evaluation function of the macro city traffic flow is given, and finally combined with the multiple-element linear vehicle speed model of the road in different vehicle flow density and initial states, the driving speed constraint equation of an intelligent vehicle in a city road network is obtained, and the optimal driving speed and travel time which satisfy a target function are obtained.