Intelligent control device and control method of layer mining, control and testing of gas well

The invention discloses a control method layer mining, control and testing of gas well. The method comprises the following steps: setting three production gas layers of a natural gas well as a gas layer A, a gas layer B and a gas layer C, mounting a direct reading intelligent gas well underground layering zonal pressure measuring device on each layer, packing the three production gas layers through a gas control underground packer, and ensuring that a ground intelligent control box gives an instruction to enable the direct reading intelligent gas well underground layering zonal pressure measuring devices of the gas layers A and C to be closed, open a communicating hole of the direct reading intelligent gas well underground layering zonal pressure measuring device of the gas layer B when the gas layer A is required to be closed, the gas layer B is required to perform production and the gas layer C is required to be closed, so as to enable natural gas of the gas layer B to be output to the ground through an oil