Fast food I believe that most of people have been heard about this name and have tried it until now. Fast food is the food that can be prepared and served very quickly, and it may refer to food sold in a restaurant or store with low quality preparation and served to the customer in a packaged form for take-away. At present fast food becomes a role important in every corner of countries around the world including in Thailand. Fast food now feature in many choices of food in Thai society and culture, for example in economic, job, and health issue. This essay aims to evaluate the effects of fast food on Thai culture.