The invention provides a safe anticorrosion oil tube coupling. The safe anticorrosion oil tube coupling comprises a body, an anodic metal sleeve and a spark-proof sleeve, wherein the anodic metal sleeve and the spark-proof sleeve is fixedly arranged on the body in a sleeving mode, and the body is fixedly sleeved with the spark-proof sleeve. One end of the spark-proof sleeve is in butt joint with one end of the anodic metal sleeve; the outer diameter of the spark-proof sleeve is larger than the outer diameter of the body. Because of the spark-proof sleeve with the large outer diameter, spark generated through friction can be avoided when an oil tube is connected with the safe anticorrosion oil tube coupling and descends to a well, the anodic metal sleeve and the oil tube form a new macroscopic battery when the oil tube and the safe anticorrosion oil tube coupling descend into a well fluid, so that the oil tube is protected by consuming the anodic metal sleeve, and the aim of preventing corrosion of the connected oil tube is achieved.