Abstract: The performance characteristics of the new type water-soluble rust inhibitor for the petroleum geology tube are expounded, the similar products at home and abroad are compared and analyzed and the practical application of the product is described. The results show the product is an environmentally friendly product made of the materials such as the composite modified polymer resin and compound corrosion inhibitor, with good rust prevention and mechanical and physical properties, which can meet the operating requirements for the petroleum geology tube and also meet the requirenments for the environment protection, safety and health specified by the state.