Our company applied for an invention patent for the preparation method of Sodium Cocoyl Isethionate on October 16, 2013. Based on the product preparation method with patent number 201110006393.3, this patent can produce Sodium Cocoyl Isethionate with an active ingredient content of 80% -88% by changing the process conditions, namely SCI-85. This patent was successfully authorized and published on March 4, 2015. The Sodium Cocoyl Isethionate product with this specification index has better performance and can be made into powder products, which are more widely used in personal care products.