The invention discloses a stable pressing cardiopulmonary resuscitation device for an emergency department, and belongs to the field of emergency equipment. The stable pressing cardiopulmonary resuscitation device for the emergency department comprises a back plate, a device core, a telescopic cylinder, a hollow lifting rod, a stable transverse rod, a sliding plate and a stable block, wherein thedevice core is connected to the back plate and comprises a stable frame, the stable frame is fixedly connected to the side wall of the device core; the telescopic cylinder is slidably connected to theside wall of the back plate; the hollow lifting rod is slidably arranged on the telescopic cylinder; the stable transverse rod is fixedly connected to the upper portion of the hollow lifting rod; thesliding plate is slidably connected in a sliding groove, the stable block is fixedly connected on the sliding plate. By inserting the stable block into the stable frame on the device core, the devicecore is stable and the pressing effect is ensured, meanwhile a second piston is pushed by a piston suction device, so that gases in a second gas-type fitting, an air hose, a first gas-type fitting are conveyed into the telescopic cylinder, and a movable shoulder stable plate is pressed on shoulders of patients. The device has stable effects on the patients, is convenient to press, and has great pressing effects.