The present invention provides a retractable spray beam which is a spout composed of an outer pipe and an inner pipe respectively having spray nozzles, wherein the spout is made retractable by sliding the inner pipe. The subject of this invention is to make the flow channel branching holes disposed at the outer pipe not blocked by the inner pipe. The retractable spray beam of this invention is provided with a spout (2) composed of an inner pipe and an outer pipe； a retaining member (5) installed at the midway of the outer pipe (2b) in the longitudinal direction； and spray nozzles (3) respectively disposed at the retaining member and the front end of the inner pipe (2a). A cylindrical insertion part (9) formed at the front end with a groove (10) is disposed on the retaining member of the retractable spray beam. The cylindrical insertion part (9) is inserted in the through hole disposed at the midway of the outer pipe (2b) in the longitudinal direction and protruded to the interior of the outer pipe (2b), and the cylindrical insertion part (9) is disposed at the inner side with the inner pipe (2a).本發明提供一種伸縮式散布竿，其係以各自具有噴霧嘴之外管與內管構成1根噴管，且藉由使內管滑動而使噴管伸縮者，其課題在於使設置於外管之流路分支用孔不被內管堵塞。本發明之伸縮式散布竿具有：由內管與外管組合而成之噴管2；安裝於外管2b之長度方向中途之固持件5；及分別設置於該固持件與內管2a之前端之噴霧嘴3；且於該伸縮式散布竿之固持件5上，設置前端形成有溝10之筒狀插入部9，將該筒狀插入部9插入設置於外管2b長度方向中途之貫通孔並使其突出於外管2b內部，且於該筒狀插入部9之內側配置有內管2a。
