The utility model discloses a gastrointestinal decompression box relates to stomach branch of academic or vocational study care implement material technical field. It has the wedge gas collecting channel including the laminating of upper surface rear end middle part and the intercommunication of decompression box body, decompression box body, the top intercommunication of wedge gas collecting channel has the pipe, install the ooff valve on the pipe, peg graft and has switched on transparent compression gasbag in the upper portion of pipe, the pressure cap is installed to the top surface of transparent compression gasbag, the lower part of pressing the cap is for installing on transparent compression gasbag and the check valve that outwards switches on, press the middle part sliding connection of cap to have the control lever, be provided with the pressure spring between the lower extreme of control lever and the jam ball of check valve. The utility model discloses can be with the gas outgoing in the box that reduces pressure to what can prevent the interior hydrops of decompression box reveals safety of operation, sanitation and convenience.