Petroleum ester oxide barium soap corrosion inhibitor

The invention provides a petroleum ester oxide barium soap corrosion inhibitor. The petroleum ester oxide barium soap corrosion inhibitor comprises petroleum ester oxide barium soap, caproic acid, calcium petroleum sulfonate, ethyl stearate, benzotriazol and gasoline. The corrosion inhibitor is prepared by uniformly mixing above components at room temperature according to a formula. Petroleum ester oxide has a good corrosion inhibition effect. The molecule of the petroleum ester oxide contains a carboxyl group, a hydroxyl group and other polar groups, so the petroleum ester oxide has very strong adsorption ability to the metal surface and also has good oil solubility; and the hydroxyl group can emulsify water on the metal surface.