The invention discloses a gastric lavage emetic device for the gastroenterology department. The device comprises a working table, a driving motor is fixedly connected to the upper end of the working table, a rotary table is connected to an output end of the driving motor through a coupling, a drive rod is hinged to the end, away from the driving motor, of the rotary table through a movable shaft,a movable rod is hinged to the side wall of the other end of the drive rod through a movable shaft, a support rod is fixedly connected to the upper end of the working table, a casing pipe is fixedly connected to the support rod, the movable rod is slidably connected into the casing pipe, a length adjusting device is fixedly connected to the end, away from the drive rod, of the movable rod, spongesleeves the other end of the length adjusting device, the length adjusting device comprises an emetic pipe with an opening formed in one end, and the end, away from the opening, of the emetic pipe isfixedly connected to the end, away from the drive rod, of the movable rod. The gastric lavage emetic device for the gastroenterology department is simple in structure and convenient to operate, by means of physical stimulation, the problem that gastric lavage liquid is used, and secondary damage is caused to a digestive system is avoided, and the usable range of the emetic device is wider.