The invention discloses a connector, which comprises a working barrel, an upper expansion joint and a lower expansion joint, the upper end of the lower expansion joint is inserted into the lower end of the upper expansion joint and fixed by pins, the lower end of the lower expansion joint is inserted into the upper end of the working barrel and fixed, and a wet connector is eccentrically arranged in the working barrel, and is fitted on an adapter in a tubing. Since the wet connector of the connector provided by the invention is eccentrically arranged in the working barrel and then fitted on the adapter eccentrically arranged in the tubing, the inconvenience of the central connection of the wet connector in the prior art is avoided, and the service life of equipment is prolonged.