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In order to solve the problem of poor restoration and poor system fluency in urban visual simulation, a visual simulation framework based on co-simulation of Vega Prime and VC++ is proposed. Multigen Creator and 3D MAX are used to model the scene and Vega Prime is used to realize scene dynamic driving in VC++ environment. The key technologies of visual simulation such as model optimization, node dynamic driving and model encapsulation are studied. The construction of the urban traffic environment visual simulation system is completed with the key technologies of vision modeling. The results show that application of key technologies shortens the view loading time to 1/6 of the initial loading time and increases the average frame rate by about 30%. The visual simulation system provides rich and realistic graphic images, good user experience and high-reliability visual simulation effects.