Abstract: The degumming process at high temperature and pressure with environmental_protection effect for the natural yellow silk and coarse denier silk fabrics was searched.The experiments show that the degumming process in distilled water at high temperature for silk fabric is an effective and fast process which is benefit for both sericin recovery and environmental protection,based on effective degumming.The optimum process of natural yellow silk fabric is conducted at 120℃ for 30 min with the material to liquor ratio at 1∶100,the coarse denier silk fabric at 120℃ for 60 min with the material to liquor ratio at 1∶300.