Traditional, complementary, and alternative medicine(CAM) constitutes a major source of health care in developing countries. Its therapies, products and practices are increasing used in industrialized countries, typically by around 50% of the population. However, controls on the provider of CAM services and supply and promotion of complementary medicines are weak in these countries. These trends evoke important public health questions relating to benefits and detriments, safety and quality from medical, financial, and social perspectives. In the western counties, investment in research is increasing, and some guideline is now available for ensuring their quality, efficacy, and safety according to the criteria of evidence-based medicine as legally demanded. National policies and legislation are being developed in many countries and often include partnerships between biomedical and traditional health practitioners. The purposes of the study were to review the policies on CAM, to examine the responses of the government to cope with use of CAM in industrialized countries. Lastly, some implications and recommendation are suggested.