Decompression device special for stomach and intestine

The special gastrointestinal decompression device comprises two end covers, a telescopic film is connected between the two end covers, the two end covers and the telescopic film are matched to form a collection container, and a sealing cover is detachably connected into a through hole formed in the middle of the lower end cover through threads. The middle of the bottom face of the sealing cover is communicated with a liquid discharging pipe capable of being opened or closed, the inner side of the sealing cover is fixedly connected with a first spring, and the upper end of the first spring is matched with the upper end cover. The position of the movable sleeve is adjusted in the movable groove by moving the movable sleeve so that the movable sleeve can be conveniently used by patients with different stomach depths, after the movable sleeve is moved, the clamping sleeve is bent to be clamped on the positioning block, the position of the movable sleeve is fixed, at the moment, the magnet on the movable sleeve is