It is not easy to identify and deal with the insider trading, even for countries with developed securities markets because this is a complicated legal violation, which is hard to be made clear. Practices in China have proven that once a comprehensive legal framework is developed, the state management agencies may have solid grounds and evidences to identify, deal with and prevent the insider trading. For Vietnam - a premature securities market, it is necessary to review the legal experience of other countries as well as the world’s common practices on insider trading for the development and improvement of legal regulations on this mater to ensure stable and sustainable development of Vietnam’s securities market.