The invention provides a snare for one-time removal of an endoscopic omentum foreign body. The snare includes a sleeve ring, a straight rod, a first connection rod, a second connection rod, a pull rope, a spring rotating shaft, a stirring blade, a tapered funnel, a motor, a screw rod, a drill head, a telescopic pipe, a hollow pipe and a solid pump; the lower end of the sleeve ring is provided with the straight rod, the right end of the sleeve ring is provided with the first connection rod, the first connection rod is connected with the second connection rod through the spring rotating shaft, the right end of the straight rod is connected with the pull rod, the pull rod is installed on the second connection rod, the snare can be folded, the removal effect is improved, the upper end of the motor is provided with the stirring blade, the upper end of the stirring blade is provided with the screw rod, the upper end of the screw rod is provided with the drill head, the snare can be used for stirring, the right end of the telescopic pipe is connected with the hollow pipe, the right end of the hollow pipe is provided with the solid pump, and the snare can be extended and contracted. The snare is convenient to use and operate, can be folded and used for stirring, can be extended and contracted and automatically conveyed, the stability is good, and the reliability is high.