In this paper, the data about drainage gas recovery in 11 middle-shallow layer of gas fields in western Sichuan gas field are studied, and the alternative drainage gas recovery program is selected. According to the geological characteristics, the water production mechanism of gas reservoirs and the water production characteristics of water-yielding gas well, the technological economic integrated evaluation indicators of the middle-shallow layer reservoirs in western Sichuan are established. By establishing the optimization model of DEA drainage gas recovery program, the technological program is analyzed, and the economic benefit is accurately evaluated, so as to select the optimal drainage gas recovery program.