In an increasingly globalized world, English has become an important in many countries of the world, including Thailand. Teaching English today, Thailand is weak in English language often have harmful effects. Although English is recognized as the second official language. In order to understand the teaching of English to understand the basic of the culture. From the point of view can be understand some of the new initiatives are being implemented in teaching English in Thailand. In this study I focused on the following question: What is the second language? Why English is very important? How about English in Thailand? Why are Thai students weak in English?