For Astro/Space phenomena, of which we can not examine by direct experiment, it is very efficient to numerically solve equations which describes the corresponding phenomenon. Hence, we construct an Astro/Space Simulator as the product of ACTJST project "Development of Space Simulation Net Laboratory System". By this simulator, we construct and maintain code library and provide a virtual laboratory by which one can simulate, analyze, and visualize the phenomena through network. We also provide a summer school for graduate students and researchers and create an opportunity to extend our research fields. 
