The invention relates to a system for applying to the trunk (4) of a palm tree, serving as a lifting and holding means for the leaves (3) thereof, or as a support means for additional plants, of the climbing type or other types, or even for supporting elements such as photovoltaic plates, wind generators, antennae etc. The system is based on the arrangement of two rings (1) and (2) on the trunk (4) of the palm tree, ring (1) being the one which is fixed to the trunk, and having an adjustable contour so as to be able to adapt to the increasing thickness of the trunk (4) of the palm tree as it grows, or being fixed and applied to the fully grown trunk, while ring (2) is suspended in relation to the previous one and is wider, the two rings (1 and 2) being connected by means of suitable struts (5) that are length-adjustable or fixed, deformable or rigid, and complemented by a third stabilisation ring (6) which is connected to the lifting ring (2) by means of struts (7), the contour of said stabilisation ring (6) also being adjustable or fixed.