In this paper ,the operating cost forecast natural gas field with optimization control is for research object, by the natural gas costs based gas HTB, using GM (1, 1) model of the natural gas operation cost will do forecast, and use DEA (I-C2R) technology to input and output elements in evaluation and optimization, which is accurate for gas field management departments to provide cost optimization measures, which can help the gas field optimize the allocation of resources, so as to improve the overall economic benefit of gas field.