The utility model provides a quick connector belongs to mechanical technical field. It has solved the current problem that the quick connector suitability is low. It is including connecting the body, and the one end that connects the body is the end of pegging graft, is equipped with rand bushing pipe in and in the end of pegging graft, still is equipped with in the end of pegging graft to be the annular position circle of circle, and the lateral wall and the inside wall counterbalance of the end of pegging graft of position circle are leaned on, the position circle with the rand in and the bushing pipe spacing in the end of pegging graft, the end outside spiro union of pegging graft has a locking cap, the inboard of locking cap is supported and is leaned on on the rear end of position circle, the rear end of interior bushing pipe is passed position circle and locking cap in proper order and is lain in locking outside the cap. It has extensive applicability, can solve the advantages such as orientation problem of grafting structure when grafting large diameter pipe fitting well.