The main component of the nine - nine - dimensional vinegar is acetic acid. Acetic acid has a strong antibacterial effect. It has antiseptic effect on many kinds of bacteria. Staphylococcus aureus is one of the most important pathogenic bacteria of bacterial food poisoning with acute gastroenteritis. Salmonella typhi and pathogenic e. coli are also important intestinal infectious diseases, and can be killed by half a minute when the concentration of acetic acid is 122.5 mg/liter. In addition, wei he vinegar also contains a variety of nutrition components, can enhance the body adjustment function, when the inside of the organ, the lower diarrhea causes the body to weaken, the wei he vinegar can also supplement the body to be used to be the deficiency, enhance the ability to fight disease.