Abstract: Auto-station system composed of natural gas vehicles and gas service stations was studied in the research according to the method of system analysis. System dynamics model is developed based on economic relationship between interrelated objects in the model. Principles of effects of policies of price of natural gas to the system and gas service station construction layout modes selected by government to auto-station system are derived from the scenarios generated by system simulation of the system in the future under different external possible conditions. It’s proved that government should depend on future information rather than current information in the actual process that layout is worked out by scientific and reasonable forecast.