The utility model relates to a positioning structure of an extension rod of a gardening tool.It includes: an outer tube,An inner tube and a telescopic control group,Among them,The outer pipe is sleeved with the inner pipe system.The inner tube can make coaxial expansion displacement along the outer tube in the inner tube part of the outer tube.And the outer pipe system has a first end.A second end and a fixing hole,The fixing hole is adjacent to the first end.The inner tube is arranged with a plurality of adjustment holes penetrating the tube wall in sequence.The telescopic control group has a joint sleeve fixed on the first end of the outer tube.A compartment is formed on the joint sleeve.A press button is installed in the chamber.An elastic part and a fixed pin,The bottom surface is provided with a hole which is aligned with the fixing hole.一種園藝工具伸縮桿定位結構，其包含有：一外管、一內管與一伸縮控制組，其中，外管與內管係相套接，讓內管能在外管的內管部中沿著所述外管做同軸的伸縮位移，且該外管係具有一第一端、一第二端與一固定孔，該固定孔是鄰近於第一端，所述內管上則依序排列有多數貫穿其管壁的調整孔，伸縮控制組具有一固定在所述外管第一端上的接合套，所述接合套上形成有一容室，容室中安裝有一壓鈕、一彈性件與一定位銷，底面則設有一與所述固定孔保持對位的穿孔。
