Disposable connector

The invention discloses a disposable connector, relates to a connector capable of converting a virtual connection state into an actual connection state, and solves the problems of a complex structure, multiple parts, high requirement on matching precision, high cost and low reliability of the connector for converting the virtual connection state into the actual connection state. A safety tube is arranged in a second central hole of a first connecting piece and a through hole of a second connecting piece; a cylindrical pin is arranged in a tube cavity of the safety tube and is in sliding fit with the safety tube; a section of the tube cavity of the safety tube corresponding to the first connecting piece is a cavity; a spring seat is arranged on a first small-diameter cylinder of the cylindrical pin; one end of the spring seat is arranged in a first central counter bored hole of the safety tube, and the other end of the spring seat is exposed outside the first connecting piece; a safetypin is inserted into radi