Abstract: The present invention discloses an improved structure of a fixation and anti-leakage socket joint, comprising a soft tube, a blocking ring in the inner tube, a fixation ring on the outer tube and two fitting rings around the both ends of the tube; a blocking ring in the inner socket; a soft tube completely wraps the adjustable pipes; the thread on the socket; the elastic grips extended from the socket; two caps on both sides of the socket. When the caps are fastened, the elastic grips are squeezed inwards to compress the soft tube and therefore fix the pipes. Such socket joint provides a fixation and anti-leakage device for the users to handle the adjustable pipes more easily and safely.