The invention discloses a full-automatic Christmas tree leaf-cutting and branch-binding integrated machine. The machine comprises a machine body, a fixed-length cutting mechanism, a boxing mechanism,a threading mechanism, an iron wire sorting mechanism, a pneumatic clamping and stretching mechanism and a cylinder box-changing mechanism. According to the machine provided by the invention, two combed single branches are combined and inserted into a twin-branch pipe and then pushed to a cutting frame for cutting, a pneumatic lifting pipe presses a lifting pressing plate downwards, the branches are adjusted to be tidy, fibers used for binding are sucked into a hollow pipe from a threading inlet for the purpose of binding, a magnetic roller sorts an iron wire by means of the principle that themagnetic attraction force declines, a finished product is moved to a position above a charging box body through a driving belt, after a boxing claw releases the product, the product falls into the charging box body, a platform cylinder pushes a hollow charging box body, accordingly, the full charging box body recedes, by means of the structure, the labor cost can be greatly reduced for enterprises, the working efficiency is improved, and staff are liberated from heavy manual operation.