In the operation process of gas storage, cyclic gas injection/production causes frequent pressure change in the storage area, leading to uncertain change of injection/production capacity of wells, the physical properties of reservoir and the boundary conditions around the well. Well tests have been continuously conducted to monitor the pressure and gas injection/production volume of wells in the reservoir area. By time lapse interpretation analysis, injection/production equations and reservoir physical properties models have been continuously established under different formation pressures so as to formulate injection/production systems reasonably and summarize the changing rules of formation pressure, reservoir parameters (wellbore storage coefficient, skin, permeability, etc.) and boundaries with time and cumulative injection volume. From the early stage of reservoir construction to the present, well test technology has been applied on-site for more than 200 times, which have ensured the indicators such as gas injection pressure, formation pressure, and injection/production capacity meet the design requirements for safe operation of gas storage. This provides a basis for the deployment of well locations in the subsequent expansion and drainage stages of the reservoir area, and also provides valuable experience for monitoring other gas storage groups in Liaohe Oilfield.