The purpose of this thesis is to study the transformation of entertainment culture in Bangkok during 1948-1957. The transformation was caused by three factors. The factor was the government policy to preserve the royal entertainment culture as part of the national identity. The second factor was the western culture. The new groups of people traders, modern scholars in the public and private sectors, workers and supporters from rural area and many people in the traditional society—value western culture as a sign of high status and better taste. The last factor is Thai artists. Some artists try to develop the traditional performance and music to be more popular. At the same time, with the support from the governmental sector, the artists succeeded in making the royal performance and traditional music become the standard of Thai modern art.