The present invention provides a fishing rod rear plug retaining structure, comprising: a rear plug cover having a body； a combined portion provided with a connecting portion, which is disposed at the combined portion and surrounding the periphery for the fishing rod assembly The combination part further has a combination area, and a center of the combination area is provided with a reinforcement end； and a card unit has a base end； a first set of connection areas extends axially from above the base end； a second set of joints extending axially from the upper end of the first set of joints, the overall outer diameter of which is smaller than the first set of joints； and a set of interfaces disposed at the base end and axially The inward recess is in the shape of a groove, and is provided for the reinforcing end, and has a through hole, which is disposed at the bottom end of the receiving space of the set of interfaces； thereby providing a structure for preventing and removing the rear plug of the fishing rod, in particular Refers to a kind of telescopic fishing rod, which is easy to assemble in manufacturing, and its joint is presented with a rough surface to make the whole stable, and it is easy to install and use the stable fishing rod back plug function.本創作提供一種釣竿後塞防脫結構，係包含：一後塞蓋，係具有一本體；一組合部，其設有一連接區，係設於該組合部並環繞於外圍處，供釣竿組設；該組合部更設有一組合區，而該組合區中心處設有一強化端；及一卡掣單元，係具有一底座端；一第一組接區，係由該底座端上方軸向延伸；一第二組接區，係由該第一組接區上端以軸向延伸，其整體外徑係小於該第一組接區；以及一組接口，係以設於該底座端並以軸向而向內凹設呈凹槽狀，而供該強化端穿設，且具有一通孔，係設於該組接口之容置空間底端處；藉此，提供一種釣竿後塞防脫結構，尤指一種用於伸縮釣竿，其製造上易於組設，且其結合處以粗糙面呈現而令整體穩固，俾達到易於裝設且使用上穩固之釣竿後塞功能者。
