The time to cure oral anaerobic infection by taking medicine is also uncertain, there may be significant effect within 1 week, or it may be prolonged. Because the oral anaerobic bacteria infection is a very general concept, there may be many kinds of oral infections with the presence of oral anaerobic bacteria infection. For example, caries, pulpitis, periapical disease and other dental hard tissue diseases, including anaerobic bacteria infection-based periodontal disease, periodontitis caused by bad breath, these will be the presence of anaerobic bacteria infection. For the treatment of these diseases, many of them can not be solved by taking medicine alone. For caries, periapical infection and pulpitis, it is necessary to go to a professional dentistry department to remove the decayed parts and perform root canal treatment for the pulp. In the case of periodontitis, the effect of complete cure cannot be achieved by simply taking medicine, and it is necessary to go to professional stomatology department for supragingival scaling and subgingival scaling, and then apply medicine to achieve better treatment effect.