In the present human society all over the world continue to use the law to rule the country. For example, country Thailand Legislation in the country to create an orderly and calm and spruce to the nation and people in society because they all want justice together. To cut that particular action or not. There must be the basis of the passage of time has changed, causing the difference according to the era, Thailand has a history of legal history, legal history, modern Thailand, because these two laws.The time interval is important not inferior to. The study of the history of the original law, Thailand will make us aware of the value of the original, which Thailand law principles explain the theory, law, education, history, law, part of modern Thailand, will make us aware of the history of the history of modern Western legal receipt. That will make the people aware of the applicable law.