Natural gas well intelligent exploitation control method and device

The invention discloses an intelligent exploitation control method and device for a natural gas well, and the method comprises the steps: judging whether the pressure of a sleeve or the pressure of an oil pipe is stable or not after the countdown of the minimum well shut-in time is completed; when the pressure is stable, a valve on the gas production tree is controlled to open a well, and when the pressure is unstable, the valve on the gas production tree is controlled to open the well after the maximum well closing time is completed; by controlling the opening degree of a valve on the gas production tree, the instantaneous flow rate of the collection flow meter is larger than the liquid carrying flow rate; judging whether liquid passes through the pipeline or not; when liquid passes through, the wellhead pressure is controlled to be smaller than the cut-off pressure of the cut-off valve to increase the opening degree of the valve on the gas production tree, so that the liquid in the pipeline passes through;