Needle tube connector and syringe external member

The utility model belongs to the field of medical equipment, specifically disclose a needle tube connector and syringe external member, needed to change the problem of being connected of keeping somewhere the position on one's body with the patient when having solved the operation of many needle tubings many times. Needle tube connector, including the connector body, be equipped with an output and two at least inputs on the connector body, output and input are the foraminiferous bellying on the connector body, be equipped with the internal thread on the downthehole wall of output, be equipped with the external screw thread on the outer wall of input, each input respectively with output intercommunication, all be equipped with switch structure on the route of every input and output intercommunication. Output through this needle tube connector is kept somewhere the position on one's body with the patient and is linked to each other, only need change in the relevant maintenance process once at every turn with ke