The decontamination principle of pig pancreas soap is mainly due to its rich fatty acids with good decontamination performance. Pig pancreas soap is rich in oil, most of which are unsaturated fatty acids such as linoleic acid and oleic acid. These fatty acids are lipophilic and hydrophilic, and can disperse water and oil stains and remove them. In addition, pig pancreas soap is also rich in phosphate, which can adsorb molecules in water, accelerate the combination of detergent and dirt, and improve the decontamination effect. Therefore, pig pancreas soap is an organic, natural and effective cleaner for removing oil stains.