Based on the non oil & gas volatilization and high blocking film technology, we researched & developped non-excavation repairing technology and reforming single layer tank into double layers tank without excavation by combining thermosetting adhesive, moreover built patent group PCT to the other countries. The operation while is very simple, no need to excavate oil tank underground. We paint high blocking film on inner wall of oil tank with thermosetting adhesives, later it can form one solid inner layer. In addition, it can realize the leak detection of current common double layers tanks.