Abdominocentesis tube placement device

An abdominocentesis tube placement device belongs to the technical field of medical appliances. The abdominocentesis tube placement device comprises an insertion component, a storage component, a casing, a locking fitting structure 1, an unlocking structure, a tube needle and a locking fitting structure 2, wherein the insertion component comprises a cover base, and a water inlet is formed in the cover base; the casing communicates with the water inlet; the storage component comprises a clamping base, and a storage hole is formed in the clamping base; and the tube needle communicates with the storage hole. The device is characterized in that the locking fitting structure 1 and the locking fitting structure 2 constitute a locking mechanism through fitting when the casing is inserted into the tube needle, and the locking mechanism can implement at least two stages of locking states; at least the tail end of the sleeve is not sealed; and the tube needle is longer than the casing, the tube needle and the casing are fitted in order to ensure the tail ends of the tube needle and the casing can constitute a sealed structure under at least one stage of locking state, and the tube needle and the casing are fitted in order to ensure that the tail ends of the tube needle and the casing constitute a non-sealed structure under at least one stage of locking state different from the abovementioned locking state. The device provided by the invention is applicable to various drainage and shunt operations outside an abdomen inserted tube. The device has the advantages of safe, convenient, reliable and smooth operations.