During the water-drawing oiling process, defects such as dirt, raw silk, sizing lumps, overlapping fibers, water absorption, fiber breakage, and loose fibers may occur on the surface of the raw water-drawn yarn due to factors such as raw materials and equipment processes. These defects can further lead to fiber breakage in subsequent drawing, steaming, and winding processes, affecting the quality of carbon fiber products and production efficiency. The water-drawn yarn quality inspection system uses machine vision technology to monitor the appearance quality of each raw yarn in real time.