A tree support frame which may adapt to plant growth, comprising: a fixing base (1), support rods (2), adjustment rods (3), and an elastic strap (4); the elastic strap (4) is a strip-shaped structure, and the elastic strap (4) is uniformly provided thereon with a plurality of support pieces (5), the support pieces (5) being provided thereon with bolt holes (6); both ends of the support rods (2) are provided with bolts, and the support rods (2) are provided thereon with slide rails (7); the fixing base (1) is an annular structure, and the fixing base (1) is uniformly provided thereon with bolt holes (6) which correspond to the bolt holes (6) on the support pieces (5); top ends and bottom ends of the support rods (2) are connected to the bolt holes (6) on the support pieces (5) and on the fixing base (1), respectively; top ends of the adjustment rods (3) are connected to axes of the slide rails (7), while bottom ends of the adjustment rods (3) are provided with self-locking units (8), the self-locking units (8)
