The invention relates to a tilt-rotor fixed wing aircraft with a vertical take-off and landing function. The tilt-rotor fixed wing aircraft comprises an aircraft body, wings and a tail, wherein the wings and the tail are mounted on the aircraft body. Pitching and tilting power devices are arranged on the left side and the right side of the aircraft body. A front landing gear and a main landing gear are arranged at the bottom of the aircraft body. An equipment hatch is arranged on the upper portion of the aircraft body, and an aviation telemetering camera is arranged in an equipment cabin. A control cabin hatch is arranged on the upper portion of the aircraft body, and a control device is arranged in a control cabin. A reverse-torsional balance power device is arranged on the rear portion of the aircraft body. The wings are mounted on the two sides of the aircraft body and provided with wing control planes. The tail is connected with the aircraft body through tail supporting rods and comprises a horizontal tail, a pitching control plane, a vertical tail and a yaw control plane. The tilt-rotor fixed wing aircraft has the advantages that the vertical take-off and landing, tilting and level flight of the aircraft can be achieved through one power system, take-off and landing of an unmanned aerial vehicle are not limited by fields, the structural weight can be better reduced, the aircraft can fly more stably, the flying time is longer, operation is simpler, and the flying process is more intelligent.