Abstract: The natural gas transportation and sale departments must, in case of equal output of gas, be clear about how to govern the natural gas in order to bring up the economic efficiency of the enterprises, that is, how to transport as much gas as possible at the system pressure as specified.This has been made possible through a mathematical model in which the plan theory is used to optimize gas distribution, and a high speed computer with a programme worked out in BASIC language.Detailed description is given in the article of this method, which, in practice, is of more economic benefit and makes greater contribution to society as well.