The invention belongs to the technical field of felling equipment, and particularly relates to a machine for integrating cutting trees and sawing the trees into segments. The machine for integrating cutting the trees and sawing the trees into the segments comprises a support base, a main body frame, a movable frame, a power transmission mechanism and a felling and sawing mechanism, wherein a rotating support frame is arranged on the support base, and the main body frame is arranged on the rotating support frame; the movable frame is arranged on the main body frame, a plurality of transmission folding rods are arranged between the main body frame and the support base, and a support transverse rod is arranged between every two adjacent transmission folding rods; a first push rod motor is arranged between the support transverse rods and the support base; and the felling and sawing mechanism is arranged at one end of the transmission support frame on the main body frame. The machine for integrating cutting trees and sawing the trees into the segments, disclosed by the invention has the beneficial effects of being convenient to operate and simple in structure, is designed for overcoming the defects of time consuming and labor consuming by artificial felling at present, and based on basic concepts of safety, economy and sustainable usability, the machine is innovated boldly, so that semiautomation of felling of the trees is realized.