The utility model provides an oil pipe, which includes: an oil pipe and the 2nd oil pipe that the lengthwise extends, have back to the connecting piece of first end and second end, first end be used for with an oil pipe is connected, be formed with the follow on the lateral wall of connecting piece the terminal surface of second end to the first recess that first end is sunken, the protrusion the lug of the 2nd oil pipe's lateral wall, the lug has first working face and the second working face faced each other in the 2nd oil pipe's the circumference, by first working face, the second working face and with first working face with the second working face is adjacent the 2nd oil pipe's the breach that the lateral wall formed, can accept simultaneously in first recess with lack and intraorally to prevent turning. Realized the utility model can provide one kind prevents that the junction from taking place pivoted oil pipe's mesh.