The invention relates to a planting support retaining ring structure including a cruciform main body which is integrally provided with a longitudinal fixation ring and a transverse fixation ring. Each of the longitudinal fixation ring and the transverse fixation ring is formed by an engaging fixation part which is penetratingly engaged with a penetrating fixation part, so that each of the longitudinal fixation ring and the transverse fixation ring is provided with a fixation space capable of being sleevingly fixed on a vertical support body or a transverse support body. Further, with the engaging fixation parts of the longitudinal fixation ring and the transverse fixation ring to be fixedly penetratingly engaged with the penetrating fixation parts, the vertical support body and the transverse support body can be stably combined to each other. Moreover, the longitudinal fixation ring and the transverse fixation ring are provided with simple structures and convenient to use, thereby attaining efficacies of preferred combination stability and usage convenience.本發明係一種植樹支柱扣環結構,其十字形本體一體設有縱向固定環及橫向固定環,而縱向固定環及橫向固定環所設卡合固定部係穿制卡合於穿制固定部,藉由將縱向固定環及橫向固定環之固定空間,套設固定於直立或橫向支柱體,並使縱向固定環及橫向固定環所設卡合固定部,固定穿制卡合於穿制固定部,使直立或橫向支柱體間穩固結合,且縱向固定環及橫向固定環結構簡易且操作使用便利,以達結合穩定性及使用便利性佳之功效。(10)...十字形本體(11)...縱向固定環(110)...縱向穿制固定部(111)...縱向卡合固定部(12)...橫向固定環(120)...橫向穿制固定部(121)...橫向卡合固定部
