Corrosion inhibitor BHH-01B, whose main component is organic phosphate, is mainly used for corrosion inhibition treatment of water system in oilfield to inhibit or mitigate corrosion of metal equipments. It has good chemical stability and high temperature resistance It is difficult to decompose, forms uniform and stable film and has an excellent corrosion inhibition effect, especially applicable to high flow rate environment which is prone to local corrosion.