为响应国家对茧丝绸高质量发展的要求，提高蚕茧利用率，降低原料消耗，本文对黄斑类桑蚕次茧进行分级分类 研究，主要考察了不同疵点程度的尿黄茧、靠黄茧、老黄茧、油茧这4类黄斑类桑蚕次茧与上茧混合加工时，对解舒性能 及品质性能的影响，并对桑蚕次茧在生丝生产的应用提出了建议。

In response to the requirements of high quality development of silk, improve the utilization rate of cocoons and reduce the consumption of raw materials. In this paper, the classifications and grades of yellow spotted light defective silkworm cocoons were studied, and the effects of 4 grades of silkworm cocoons on the reellability and quality were investigated. Some recommenda- tions on the application of light defective silkworm cocoon in producing raw silk were put forward.