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The flight mechanical environments always change, accompanied by the flight process of the launch vehicles. The environmental analyses are usually carried out for specific situations and cannot depict dynamic information, whether by experiments or by numerical simulations. Therefore, technical research on virtual test and visualization is given for the flight environments. Based on characteristic surrogate model method, field data depiction algorithm is developed using Fortran. Virtual tests of dynamically aerodynamic and aerothermal environment then are implemented using this algorithm on the basis of sampling numerical simulations. Real-time load computations are developed by C++, and virtual tests of dynamic load are realized. Bus interface is developed for the communication to flight simulation platform, and distributed visualization system is developed based on EnSight. Inter-process Communication is selected to qualify the dynamic display of flight environment. The results show that, the system can give overall and detailed information, which can provide means for refined analyses of flight environments and intuitively visual research.