Emergency plugging valve of oil pipeline

The invention discloses an emergency plugging valve of an oil pipeline. The emergency plugging valve comprises a valve body assembly which is provided with a hollow tubular valve body mounted outside the pulled-off pipe orifice end of an oil delivery pipe and a gland mounted at one end of the valve body and sealing the port of the valve body, a plugging assembly which is provided with a slide plug mounted in the valve body in clearance fit with the inner wall of the valve body and used for plugging a channel in the valve body, and an oil drainage pipe penetrating through the axes of the gland and the slide plug, and also a spring which sleeves the oil drainage pipe at the outer wall between the gland and the slide plug, wherein the slide plug is fixedly connected with the oil drainage pipe, the gland is in slide contact with the oil drainage pipe, and a ball valve for controlling the flowing and stopping of a liquid circulating in the oil drainage pipe is arranged on the oil drainage pipe. The emergency plugging valve can be mounted on the detached pipe orifice end conveniently by use of the valve body, and the pipe orifice end is sealed elastically by the internal slide plug so that oil inside the oil delivery pipe is prevented from leaking. Meanwhile, the oil drainage pipe with the ball valve is capable of conveniently draining oil in the oil drainage pipe to a specified container.