Stain detection structure and method for laser equipment

The invention discloses a fouling detection structure and method for laser equipment, and belongs to the field of laser equipment. The fouling detection structure comprises a detection assembly and a protective glass assembly; the detection assembly comprises a connecting ring, a circuit board and a plurality of photoelectric sensors, one end of the connecting ring is used for sleeving a field lens of the laser equipment, a first annular positioning groove is formed in the inner circumferential wall of the connecting ring, a cavity is formed in the connecting ring, the circuit board is located in the cavity, and the photoelectric sensors are arranged on the inner wall of the connecting ring at intervals; the protective mirror assembly comprises a base ring, a protective mirror and a pressing ring. The inner circumferential wall of the base ring is provided with a second annular positioning groove and an inner flange. According to the fouling detection structure for the laser equipment provided by the embodime