Water drive gas reservoir after gas well water production has a serious impact on gas reservoir recovery. Traditionally, it is considered that the lower the gas recovery rate is, the better the water will rise evenly and the recovery rate will be higher. Combined with theoretical analysis, microscopic mechanism of water invasion, literature research and numerical simulation, it is clear that the abandonment pressure and water invasion sweep coefficient are the main factors controlling the recovery of gas reservoirs. In homogeneous reservoirs with water, the higher the gas recovery rate, the lower the abandonment pressure and the higher recovery rate. But in real gas reservoirs, there is heterogeneity. When the gas production speed is too high, the conformance coefficient of water drive decreases and the recovery efficiency decreases. Therefore, for water drive gas reservoir, the influence of waste pressure and water drive sweep coefficient should be considered to find a balance point. Combined with the features of the realistic gas reservoir, relative to the homogeneous pore gas reservoir, the speed should be increased as much as possible to reduce the abandonment pressure of the gas reservoir and achieve the purpose of improving the recovery rate (the reasonable gas recovery rate of pore type A gas reservoir is 4% or higher). As to gas reservoirs with strong anisotropism, the gas recovery rate has a great influence on water flooding sweep coefficient, so the reasonable gas recovery rate is relatively low (about 2% or even lower for fractured B gas reservoirs). This study breaks through the conventional understanding and has important guiding significance for the efficient development of water drive gas reservoir.