Tissue crusher tool bit and laser treatment device

The invention provides a tissue crusher tool bit and a laser treatment device. The tissue crusher tool bit comprises a fixed seat, an external sheath, and an internal tool, wherein the external sheath is of a tubular structure and is provided with a first end connected with the fixed seat and a second end opposite to the first end; a cutting edge is arranged on an end face of the second end; the internal tool is provided with a spiral conveying structure; and the external sheath can rotatably sleeve the internal tool with the spiral conveying structure; the internal tool is provided with a third end connected with the fixed seat and a fourth end opposite to the third end; one part of the fourth end is exposed out from the cutting edge. According to the tissue crusher tool bit and the laser treatment device, crushed tissues are initiatively discharged through utilizing a spiral pump suction principle and negative pressure does not need to be provided, so that the operation is simplified and the use safety is improved.