This creation is a kind of adjustable trees transfusion needle of related what, it ties up in needle main body and is arranged adjustment part, through position of the adjustment part in needle main body is adjusted, reach the thickness that can regard trunk, the acupuncture treatment length of transfusion needle is adjusted, and then changes the purpose that the transfusion needle penetrates the depth degree of trunk.本創作係有關於一種可調式之樹木用輸液針,係在針主體上套設調整件,透過調節該調整件在針主體上的位置,達到能視樹幹的粗細,調整輸液針的扎針長度,進而改變該輸液針扎入樹幹的深淺程度之目的。