External container inner wall cleaning structure and cleaning method

The invention provides an external container inner wall cleaning structure and method, a cleaning assembly is connected with a container, the cleaning assembly comprises a laser light source, the laser light source is used for emitting light beams, the emitting frequency of the light beams of the laser light source is smaller than 1000 Hz, and the value range of energy of the light beams emitted by the laser light source is 0.1 J to 100 J. The galvanometer component is used for receiving light beams emitted by the laser light source and forming cleaning light beams used for cleaning the inner wall face of the containing cavity; the wedge mirror assembly is arranged corresponding to the container opening, so that the cleaning light beams enter the containing cavity after being refracted by the wedge mirror assembly and irradiate the inner wall face of the containing cavity; and the wedge mirror assembly is connected with an output shaft of the driving motor to drive the wedge mirror assembly to rotate, so that