Abstract: Three-dimensional movement state of bottom outer edge plate of oil tank opposite to the concrete base of oil tank and the corrosion of bottom plate induced from environment change are presented in the article. The cause in poor protection effectiveness of bottom outer edge plate for oil tank with traditional protection method is analyzed. A new material in anti-three-dimensional movement of bottom outer edge plate on concrete base is developed based on the analysis results and a new technology and method for the corrosion control of bottom outer plate of oil tank are put forward.