The invention discloses a glue feed improving nozzle of a narrow long hollow pipe fitting injection mould. An injection moulding cavity corresponding to a narrow long hollow pipe fitting is arranged between an upper mould and a lower mould of the injection mould; the injection moulding cavity is axially parallel to a joint face; particularly, the glue feed improving nozzle is provided with over two spouts uniformly distributed along the periphery of one end of the narrow long hollow pipe fitting; the glue-out direction of the spouts inclines from the axial direction of the narrow long hollow pipe fitting. By adopting the glue feed improving nozzle disclosed by the invention, the requirements on the special shape and accuracy of injection products can be met; with the nozzle, spiral glue feed and multi-flow gathering are realized, the glue supply margin at the tail end of the injection product is effectively increased, and the moulded narrow long hollow pipe fitting can meet the accuracy requirements in concentricity, perpendicularity, surface roughness, etc.