From the current study found that bacteria that cause disease, there are several types, including pathogenic bacteria in the digestive system when contaminated food cause diarrhea nausea, vomiting, intestinal inflammation. Pathogenic bacteria can be found general, soil and water, such as Escherichia, Salmonella infection, etc, thus making the synthetic medication used to treat symptoms of infection can be treated. But these synthetic drugs may cause side effects to the patient or cause of drug resistance, said. Therefore, the Bringing natural extracts that have no side effects and is safe for patients in their treatment of the infection from pathogenic bacteria instead of using synthetic chemicals, so it is an alternative to such bacteria inhibitor. This study, therefore, studying the natural compound in inhibiting bacteria. The results found that there are many types of plant extracts can inhibit plant pathogenic bacteria.