The utility model discloses a storage tank pressure stabilizing system for gas supply, which is used for improving the stability of pressure in a storage tank. The storage tank pressure stabilizing system for gas supply comprises at least two storage tanks and air temperature superchargers arranged in one-to-one correspondence with the storage tanks, and each storage tank is provided with a firstliquid outlet, a gas return port and a second liquid outlet; Wherein the air temperature supercharger is provided with a liquid inlet and an air outlet, the first liquid outlet is provided with a first throttling valve, and the first throttling valve is connected with the liquid inlet through a first pipeline; The air return port is provided with a second throttling valve which is connected with the air outlet through a second pipeline; A third throttling valve is arranged at the second liquid outlet and is connected with the gas conveying pipeline; An air outlet of the next air temperature supercharger is connected with an air outlet of the previous air temperature supercharger through a third pipeline, and a fourth throttling valve is arranged at the end, close to each air temperature supercharger, of the third pipeline.