The Ayutthaya to the Burmese in 2310 that the house would be burned to death and one person had been carried away captive, and historical documents were destroyed and lost a lot. Including documents related to Thailand mainly by law. Is expected to remain only about a tenth of the only crown the first king of the Rattanakosin period reigned by the original legislation. Of Ayudhya continues Has caused a problem in the case of a judge. He realizes that there may be discrepancies or deficiencies of the existing law deserves to be examined. Great pay legislation and prepare new laws give accurate, essentially as a base. The Law of the West Siam has established a code called the law was enacted. Indeed, this law does not yet have a codified some of its meaning. Code of the West It is simply a collection of laws and legal systems to provide accurate and complete. Law to justice even more. Therefore, the content of the new law, just like almost all laws Ayutthaya. Because the living conditions of people in social, political and economic system in the city. Bangkok is no different from the original. The new law therefore remains suitable for Thailand.