The invention discloses an inhibitor injection control method and system, equipment and a storage medium. The method comprises the steps that the inhibitor is injected into a condensation water systemin the unit operation process, wherein the inhibitor includes oxygen, nitrogen and ammonia; and injection of the inhibitor is stopped when the potential of hydrogen of the condensation water in the condensation water, the preparation proportion of the oxygen and the nitrogen in the condensation water and the content of the nitrogen and the oxygen in the condensation water system meet the preset conditions. According to the technical scheme, the technical problem that oxide skin falling is not significantly decreased after changing the steam pipeline material and reducing the steam temperatureand pressure can be solved, and the technical effects of reducing the oxide skin falling rate, reducing the cost and enhancing the service life of the steam pipeline and the stability of the power grid power side can be realized.