Inner wall supersonic laser composite deposition device

The invention discloses an inner wall supersonic laser composite deposition device. The device comprises a galvanometer scanning unit, wherein the galvanometer scanning unit comprises a mounting framebody and a galvanometer scanning device, the mounting frame body is mounted on an inner wall supersonic laser deposition unit, an upper portion of the mounting frame body is provided with a light transmitting opening allowing laser beams to penetrate through, and the bottom of the mounting frame body is provided with a laser outlet allowing the laser beams to penetrate through, the inner wall supersonic laser deposition unit comprises a cylinder body, a nozzle, a laser path, an air supply pipe and a powder supply pipe, the nozzle, the laser path, the air supply pipe and the powder supply pipeare all installed in the cylinder body, a light outlet of the laser path is divided into two parts through an optical splitter, a first path extends to the light transmitting opening of the mountingframe body, and a second pa