Herbs have been used for medicinal purposes in humans in the form of herbal medicine from past to present. In ancient times, the traditional medical system is currently developing medical science called "medicine Thailand" So in the current situation, there is a possibility that herbal medicines. May be contaminated with toxic components. Which can not be ignored Potentially severe harm to human life. The seminar is very interesting to study, "Monitoring of contamination by bacteria in the product herb medicine" for contaminants that may be toxic and may pose a serious impact on the system. the human body Some may be contaminated with heavy metals such as lead, arsenic, cadmium, copper, mercury and pesticides. The drug increases the strength of modern medicine. And a population of microorganisms including human pathogens that may contaminate the pill, bolus dose of powder and herbs. The contamination of microbes seem to be more severe and may be due to the production of drugs such as the use of chemical nutrients is especially important to have medicinal properties and, in some cases. Microsoft has produced toxin Which may cause cancer Severe or life